Some everyday designs have been around for generations. We've seen them thousands of times, used them for decades — and somehow nobody ever explains why they're made that way.
In this video, we're solving the mysteries behind familiar household objects, old-school designs, strange features, and clever details many of us grew up with.
Some exist because of forgotten problems. Others hide surprisingly smart engineering. And a few have purposes completely different from what most people assume.
You've known the object your whole life. Now you'll finally know WHY.
#EverydayMysteries #HiddenFeatures #CleverDesign #ThingsYouDidntKnow #HiddenSecrets
In this video, we're solving the mysteries behind familiar household objects, old-school designs, strange features, and clever details many of us grew up with.
Some exist because of forgotten problems. Others hide surprisingly smart engineering. And a few have purposes completely different from what most people assume.
You've known the object your whole life. Now you'll finally know WHY.
#EverydayMysteries #HiddenFeatures #CleverDesign #ThingsYouDidntKnow #HiddenSecrets
Category
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FunTranscript
00:00You're heading to a supermarket to get a few small items.
00:03The self-service checkout is way faster than waiting for people to unload their huge shopping carts.
00:10But this loud voice from a machine, commanding over and over again, spoils all the appetite.
00:16I have some good news for you. You can turn it off.
00:20Take a closer look at the screen. You'll probably see a volume button at the bottom.
00:26Use your finger to mute the annoying polite voice once and for all.
00:31Not all machines have this hidden option though, but it's definitely worth checking out.
00:38Usually, a sunflower oil bottle has this weird inner cap.
00:42Most people remove the entire top layer and throw it away.
00:46But there's actually a better way to use it.
00:49Turn the removed element inside, down, and put it into the bottleneck.
00:54It will make a great dispenser, and you'll never spill more oil than you want it in your salad.
01:01Planning a picnic with your friends in the wild?
01:04Forget about the classic picnic basket. We got it all wrong.
01:08It's not a basket, but a bucket.
01:11Yep, it's way better to put your picnic stuff into several buckets.
01:16This will help evenly distribute the weight among all guests.
01:19And when you find a nice spot for your picnic and get all the stuff out, turn the buckets over
01:25and use them as stools.
01:27When the food is over, put the buckets into each other to save space on the way back home.
01:34Your toast is getting burnt, but you don't have any kitchen tongs at hand?
01:38Take two identical forks. Put them together, time to time.
01:43Stick them tightly with a rubber band.
01:45And voila, your tongs are ready.
01:48Ever wondered what this double bottom under the Nutella lid is for?
01:52There's only one way to find out.
01:55Here's a brand new Nutella jar.
01:57Let's remove the white carton circle and then peel off the foil.
02:01So, surprise! There should be a little knife to cut the gold foil cover.
02:05Now you know how to get access to your favorite guilty pleasure without scratching your hands.
02:12Don't throw away the glass jar after you're done with Nutella.
02:16It can turn into a candle holder or a lantern.
02:19Wash it, paint it to your taste, add some decorations or lettering.
02:24Glue a decorative rope around the neck of the jar.
02:27Set a candle inside the jar or put string lights inside it.
02:32No one will ever guess that it used to be a Nutella jar.
02:36It'll be our secret.
02:39Have you ever wondered why Ritz crackers have ridges?
02:43You can use them as a safe knife for cheese and similar soft products,
02:48like cucumber, ham, and so on.
02:51Just roll the cracker as if it were a tiny pizza cutter and press.
02:56Now all the ingredients fit on your cracker perfectly.
02:59Enjoy your snack!
03:02Do you have one of those old baking trays that you never use but still hesitate to throw away?
03:08Good news!
03:09You can recycle it and make a gorgeous frame for a painting or a picture.
03:14There are two ways to do so.
03:16De-grease the surface of your tray and attach the image to the bottom.
03:20In this case, the frame will stick forward.
03:23Or you can flip the tray upside down and the edges will hide behind.
03:29Hang this construction on a wall or put it on a shelf.
03:32And feel free to use metal paint to give your frame an appropriate color.
03:38An old cutting board can make a great frame for a mirror.
03:42Use double-sided tape to attach a matching mirror to the surface of your board.
03:47Make sure the mirror is firmly glued.
03:50And now you can hang it on a wall using the board's handle.
03:54Or put it on a cabinet and lean it on a wall.
03:58Don't forget to wash and dry the cutting board before beginning this DIY.
04:02We don't want the mirror to smell fishy.
04:06Another superpower of a cutting board is keeping wires tangle-free.
04:10Wrap some string lights around an old wooden cutting board and put it in your closet.
04:15The next holiday season, you'll have it completely untangled.
04:21A hair dryer can make a great mini vacuum cleaner when you need an emergency cleaning.
04:26Cut a plastic bottle and dry it.
04:29Put a layer of fabric on the fan of your hair dryer.
04:33Then place the fan in the plastic bottle bottom portion.
04:37Fix the bottle and attach it to the hair dryer using a plaster.
04:41Turn it on and you're ready to clean the mess.
04:44You can use a retro gas stove grate to hang your indoor plants.
04:49Attach it to the wall with screws or nails.
04:52Now you're ready to hang flower pots, string lights and any other decor items.
04:58If the color of your stove grate doesn't match the interior, you can always fix this using spray paint.
05:06Chopsticks and wooden ice cream sticks can also turn into a beautiful panel that will decorate your interior.
05:13Glue the edges together to create a grid.
05:15You can also put together your name or any other word you want out of sticks.
05:21Then wrap the grid around with string lights and enjoy your decor.
05:26Don't throw away wrinkled kitchen foil.
05:29It can help to sparkle up your day.
05:32Crumple identical foil balls and glue them over a glass, a mirror frame or even a book and your life
05:38will immediately become more glamorous.
05:42If you need to sharpen your dull scissors, take aluminum foil and crunch it up into a ball.
05:48Sharpen the edges of the scissors right on that ball of foil.
05:53To speed up your ironing routine, place sheets of tin foil under your ironing board and then put the cover
05:59back on.
06:00The tin foil will reflect the heat.
06:03The iron will get hotter and will do the job much faster.
06:08If you struggle to organize all your jewelry and lose your favorite items from time to time, use a sponge
06:14to store it.
06:15Just make a few cuts and put your shiny little friends inside these cuts.
06:20They will sit firmly in the sponge and won't fall out or mix.
06:25You can also use a sponge to create an organizer for your jewelry.
06:30Find a cute box, cut your sponge into matching pieces and put them inside the box.
06:36Use glue or tape to attach the sponge to the box and enjoy your new jewelry casket.
06:44You can easily make chocolate-filled strawberries at home.
06:47Take a plastic syringe, fill it with chocolate paste, remove the leaves from a strawberry and stick the syringe into
06:55the hole from which the sprig usually sticks out.
06:58Squeeze chocolate into the berry and it's ready.
07:01You can use the same technique when you bake eclairs, apples or want to leave a chocolate note on a
07:08pancake to surprise your significant other in the morning.
07:12Wooden pants hangers with metal clips can be handy when it comes to hanging curtains or a backdrop for your
07:18photo shoot.
07:19If you need to hang curtains but don't have any special hooks, attach several plants hangers along the entire length
07:27of the curtains and then hang this construction on a ledge.
07:31An old metal tea jar serves as a mini shelf for small things in your kitchen.
07:37Apply double-sided tape to the jar and stick it to the top corner of your cabinet.
07:42There's nothing better than a nice piece of buttered toast for breakfast, if we're not counting hot fudge sundaes.
07:49But if you find it harder to spread out cold butter over your toast, here's an idea.
07:54Use a cheese grater.
07:56Figure out the amount you need and grate the product.
07:59The process will also soften the butter, making it easier to spread, and you won't have to melt a too
08:04large amount of it in the process.
08:06But still, that hot fudge!
08:08Dried pasta comes in all sorts of different shapes and sizes for a reason.
08:14That's because each type of pasta goes best with a particular sauce.
08:18Pasta shells, for example, are perfect with denser and chunkier sauces.
08:23Why?
08:24Because the sauce gets inside the shells, making it easier to serve and eat the dish.
08:29The ribbed outer surface also helps with covering the shells in the sauce.
08:34If you ever end up burning your cookies, you can save them with your trusty grater, too.
08:40Just grate off the blackened parts after carefully taking the cookies from the baking tray.
08:45But be careful and wait until the cookies have cooled down.
08:49Also, if you ruin their shape a bit, you can always dip them in some melted chocolate.
08:55After the chocolate cools down, you'll have perfectly shaped cookies.
08:59Although, after it gets past your lips and beyond, does the shape of the cookie actually matter?
09:05Just saying.
09:07If you like adding a lot of ingredients to your sandwiches, but don't really appreciate it when the bread gets
09:13soggy,
09:13there is a way to reduce the amount of moisture.
09:16Pick your sliced tomatoes or cucumbers and place them between two paper towels for up to five minutes.
09:22After that, you can use them.
09:25Also, make sure to spread butter, cheese, or sauces, like mayo or ketchup, onto the bread first.
09:31This will help you seal the bread and keep moisture at bay.
09:36Some people think that the little white string that you find near an egg yolk needs to be removed before
09:42you cook the egg.
09:43Well, I'm here to tell you that these strands are called calaza, and you don't actually need to get rid
09:48of them.
09:48They help keep the yolk in place, at the egg's center.
09:51A calaza is not going to mess up the consistency or the taste of your food.
09:56So, removing it is completely up to you.
09:59Ever notice that most juice boxes come with two flaps, one on each side?
10:04Those are actually handles.
10:06Manufacturers design the boxes this way to make it easier for us to hold them.
10:11This way, we don't end up squeezing the box, making the juice spill out.
10:17Now, you don't need to be a baking pro to know that you can use both white and brown sugar
10:22in your recipes.
10:23But have you ever wondered what the difference between these two is?
10:27It turns out that the only thing that sets them apart is that, during production, a small amount of molasses
10:34is added to the brown sugar.
10:36Molasses is basically a sort of syrup you get when processing sugarcane.
10:40It's usually removed during the refining process.
10:43That's how white sugar is produced.
10:45But if some amount of molasses remains in the final product, we end up with brown sugar, with its specific
10:52taste and darker hue.
10:54It's a good thing.
10:56There are a lot of things you can put in your dishwasher, apart from your dishes.
11:01For example, you can clean such things as your silicone oven mitts or the knobs of some kitchen appliances, like
11:08your oven or stove.
11:09Some kitchen sponges and reusable towels may be safe to clean in the dishwasher as well.
11:15Speaking of kitchen cleaning products, there are a lot of things you can do with dish soap, like de-griming
11:22your patio furniture.
11:23Just add a bit of dish detergent to some warm water and use the solution to wipe down your outdoor
11:28furniture with a piece of cloth.
11:30Finally, rinse it clean using your garden hose.
11:34You can also use dish soap to get rid of greasy stains on your clothes, be it pasta sauce or
11:40salad dressings.
11:41Hey, sometimes we miss our mouths.
11:43So, just apply a little dish detergent to the stain and then rinse with water.
11:48Use non-colored soap for lighter clothes.
11:51For more difficult stains, let the dish soap sink in for a bit, then throw the piece of clothing in
11:56the washer as usual.
11:57And think about maybe getting a bib.
12:00If none of the methods have helped you organize your closet, and you're still overwhelmed with large piles of clothes,
12:07there's a simple way that might be effective.
12:09It's called the one-in-one-out rule.
12:13That means for every new piece of clothing you buy, you need to get rid of one you already have.
12:18That means you'll always be decluttering your space.
12:22To make it easier to find something in your closet, good luck!
12:25Keep your most used items at eye level.
12:28This way, they'll be easier to find and pull out when you're in a hurry.
12:32Those items that you tend to use less often, like your evening clothes, for example, can stay on the shelves
12:38above or below your eye level.
12:41You can make good use of old spice tins.
12:44If you glue some powerful magnets to the inside of the tins, they can double as magnetic shelves.
12:49You can use them for all sorts of everyday items, like kitchen pliers, ice cream scoops, or even cutlery.
12:57You can also place them on any metallic surface, like your refrigerator door.
13:01They'll blend in nicely with your kitchen magnets.
13:05Hidden in your laundry room, there's a great tool for picking up head hair.
13:09It sometimes works better than lint rollers.
13:12Take a dryer sheet and, using some elbow grease, you'll get rid of that dog or cat hair in no
13:18time.
13:18It works on all sorts of surfaces, but it's especially effective for upholstered furniture.
13:24Now, if you don't like it when a door starts squeaking whenever you enter a room, get a bar of
13:30soap and rub it straight on the hinges.
13:32This will only help for a while, though, but it'll do the trick until you manage to get to a
13:37hardware store.
13:38And, you know, buy some oil.
13:41Have you ever noticed that in some elevators, there's a star next to the number of a specific floor?
13:47No, it's not to indicate where my office is.
13:51It's there to point out where the nearest exit is.
13:53And it's not always on the first floor.
13:56It's most likely located on the floor closest to the street.
14:00Have you ever wondered why stop signs are red?
14:04Well, back in the day, they didn't actually have any particular color at all.
14:08Before the 1920s, they didn't even have a standardized shade.
14:12In 1922, though, someone came up with the octagon.
14:16But initially, it was painted yellow.
14:19All because the red coloring tended to fade out too quickly because of sun exposure.
14:24So, yellow turned out to be the best option.
14:26It took another 30 years for fade-resistant enamel paint to be invented.
14:31We ended up changing the color of the stop sign back to red.
14:35After all, it's still the best color if you want something to be easily noticeable.
14:40Do you know there's a type of rose that can grow taller than people?
14:45According to the Guinness Book of World Records, the tallest rose bush ever found grew in Vienna, Austria.
14:51It was a staggering 28 and a half feet tall.
14:55Yes, it arose to a great height.
14:58In the same way we all have unique patterns on our fingerprints, no two tigers have the same set of
15:04stripes.
15:04It makes it easier for people working with this feline species to distinguish one tiger from another.
15:11I'll bet you didn't know the White House has its own flower shop hidden in the basement of the building.
15:16It's supposed to provide flower arrangements for all sorts of events that take place there.
15:22It's probably no surprise that pizza has become an American staple dish despite its Italian origin.
15:29People in the U.S. love it so much that they buy 350 slices of pizza every second in the
15:36States.
15:37Man, I am not getting my fair share.
15:39To manage the huge demand for this delicious dish, around 17% of all restaurants in the U.S. are
15:46pizzerias.
15:48Finally, there's a way to make lemon juice without the seeds getting into your beverage.
15:53Try cutting the fruit in two and squeezing it with a pair of kitchen tongs.
15:57The pointed end of the lemon should be facing down.
16:00The juice will flow down, but the seeds will remain inside the lemon.
16:05Ooh, lemonade.
16:06It goes well with pizza.
16:09You see these blades?
16:11They have notched corners to make your cutting experience smoother.
16:15Ooh.
16:16The front edge notch helps with separating blades during manufacturing,
16:20while the trailing edge notch helps the blade glide easily.
16:24And a fun fact!
16:25That notch on the front also helps you spot unused sections of the blade.
16:30Just a little visual indicator to make your life easier.
16:33When it comes to silver versus black blades, they're both made from the same stuff.
16:37But black blades are sharper and are better suited for cutting through tough materials,
16:43while silver blades strike a balance between cutting power and durability.
16:47If you want that extra cutting oomph, go for black.
16:51Oh, almost forgot.
16:52The only thing those blades aren't meant to cut is food.
16:56It has a rust-proofing oil coating, which is not safe for humans.
17:01Check this one out.
17:03It's totally giving me childhood vibes.
17:05Now, I remember my grandma having tomato-shaped pin cushions just like this.
17:10And sometimes they would look more like a salad, with a little pepper thrown in there.
17:15Well, believe it or not, this salad actually has a purpose.
17:18The tomato keeps your pins in place, while the pepper keeps them sharp.
17:23Those peppers are filled with sand, which helps keep your pins nice and sharp.
17:28And it's not just sand.
17:30Crushed walnuts can also be used to keep your pins in tip-top shape.
17:35Now, look at this multiple pocket tool and this little hook on it.
17:39It's a bit of a mystery, but it's actually pretty handy.
17:42I counted at least four different applications.
17:46One, you can use it to carry all sorts of awkward stuff, like camping gear or heavy parcels.
17:51Two, need to twist some wire or play around with knots?
17:55The parcel hook has got you covered.
17:58Three, this hook can save the day with those stubborn zippers, like the ones on your luggage.
18:03Four, it's great for pretending to be a budget version of Captain Hook.
18:08If you know more applications, let me know in the comments.
18:12Apple users, with this feature, you'll never get laundry surprises again.
18:17Now, I bet you've had this situation at least once in your life.
18:21You wash your stuff, and when you take it out of the washing machine, the size seems to only fit
18:26your cat.
18:27Your iPhone camera can actually translate those funky laundry symbols for you.
18:32There are two requirements, though.
18:34You must have iOS 17, and your phone must be in English.
18:37Take a photo of the care label, go to the Photos app, and see the details of the image.
18:43Everything will be automatically decoded and explained to you.
18:48Now, many toasters come with nifty, removable crumb trays at the bottom.
18:53It's super important to give these trays a good clean every now and then to keep your toaster running smoothly
18:58and avoid any potential fire hazards.
19:01Just pop them out, shake out the crumbs, and you're good to go.
19:05Where you shake them out is up to you.
19:08Those little compartments on your gas pump aren't just for show.
19:11They're actually there to hold your cap while you're filling up.
19:14This nifty feature keeps things tidy and prevents any spills or drips on the handle.
19:20So, say goodbye to messy refueling experiences and hello to a cleaner pump.
19:25Plus, it makes the whole process way more convenient and efficient.
19:30Now, I'll bet your oven gets so greasy and dirty sometimes that you can even hear it oink.
19:36Just kidding.
19:37I know you're a tidy person.
19:39Anyway, if you're looking for a way to bring your kitchen cleaning to a whole new level, here's a tip
19:45for you.
19:45Most oven doors have handy latches that let you pop the door off for easy cleaning,
19:51saving your poor back from the strain.
19:54When you're draining noodles or potatoes, there's no need to bother transferring everything to a colander in the sink.
20:01Just throw the colander right into the pot, hold it down, and pour the liquid out.
20:06It makes life so much easier, especially when you want to save that starchy water for recipes.
20:12It's a must for authentic pasta, by the way.
20:16So let's say you've snagged this gem at a thrift store a while back for just under a dollar.
20:22It's seen better days, serving as an ashtray, but you decide it's time to give it a new lease on
20:28life.
20:29Here's the lowdown on how to make it shine again.
20:32Mix up a solution of boiling water, baking soda, and table salt in a bowl lined with aluminum foil.
20:39Let the piece soak for about 15 minutes and repeat this process three times.
20:44In between soaks, gently scrub any rough spots with a microfiber cloth.
20:49After the final soak, dry the piece off and rub on some toothpaste, baking soda, and peroxide.
20:56Buff out any remaining tarnish with a clean, dry microfiber cloth.
21:01Rinse it off, and now your piece is practically gleaming like a mirror.
21:07These aluminum foil boxes have nifty little tabs on the sides that make it super easy to grab a sheet
21:13without any hassle.
21:14It's like a fancy little bonus that makes the product a breeze and ensures you'll have a smooth sailing experience
21:21every time.
21:23Manual can openers often come with a handy built-in feature, also known as a bottle opener.
21:29It's like getting two tools in one.
21:31But did you know that this bottle opener actually has another useful function?
21:36It can help you loosen those stubborn, hard-to-open jars.
21:40Simply lift the lid slightly at a couple of points with the bottle opener,
21:44and then watch it as it effortlessly twists right off.
21:48Yeah!
21:51Okay, I just found that, apparently, you're supposed to save the first and last slices of a loaf of sliced
21:57bread for last.
21:58It's like a bread hack or something.
22:00Apparently, those end pieces help keep the rest of the bread fresher for longer,
22:04and you shouldn't eat them until you've devoured the rest of the loaf.
22:08So, next time you're making a sandwich, save those heel slices for the very end.
22:13Even bread eating needs a good strategy.
22:16Now, look at those blue levers on the top rack of your dishwasher.
22:19I was curious about them, too.
22:21And it turns out they are actually water bottle sprayers.
22:25They help to ensure that your bottles get a thorough cleaning and rinse during the wash cycle.
22:31Many vegetable peelers have those little scoops on top for taking out the eyes from potatoes.
22:37And here's a cool tip.
22:39You can actually use vegetable peelers in both directions to peel faster.
22:43But most people just stick to one direction.
22:47When using yellow mustard, make sure to push the lid of the bottle all the way open until you hear
22:53a satisfying click.
22:54This way, the lid will stay securely in place and won't get in the way when you're dispensing the mustard
23:00onto your food.
23:01It's a simple step that can make your condiment experience hassle-free and enjoyable.
23:06So there!
23:09You know that little hole at the end of your pot or pan?
23:12Well, it's not just for show.
23:14You can actually use it as a handy holder for your forks and spoons.
23:18Next time you're cooking up a storm in the kitchen,
23:21just pop your utensils in that convenient little hole and keep them close at hand.
23:27Okay, just a heads up to remember to switch the direction of your ceiling fan for the changing weather.
23:33And to give it a good clean, too.
23:35I've seen that a lot of folks found it helpful before to reverse the fan's direction by flipping a switch
23:41for different seasons.
23:43So this is just a friendly reminder to go ahead and do it again,
23:46pushing hot air down and pulling cold air up.
23:52When you're chowing down for some pizza, just tear off the top of the box and use it as a
23:57big old plate.
23:58You can even rip the box in half and fold it to save some leftovers for later.
24:03Well, that's it for today.
24:05What, you want to know more cool facts?
24:07Sure, but you'll have to subscribe and hit the bell to get more videos.
24:17Have you ever wondered what these extra holes at the top of your running shoes are for?
24:22They're designed so that you can tie the shoes in multiple different ways.
24:26That's useful when you want to compensate for things such as a bad stride or even a damaged toe.
24:32Plus, you can change the look of your shoes the way you prefer.
24:38Many people use a dust jacket of their book as a book marker.
24:42No problem with that.
24:43It will save your book from bent page corners.
24:45But the primary purpose of a dust cover is to keep the book safe from distortions.
24:51For instance, if you spill juice or drop some of the food on your book while reading it.
24:57The Tic Tac dispenser has this little groove on its top,
25:00so you can dispense only one Tic Tac at a time.
25:04Even though, let's be honest here, nobody does that.
25:07Most of us just spill a whole bunch at once,
25:09and then we wiggle all those extra Tic Tacs back in.
25:14Those rubber bumps you see between the tire treads are there for your safety.
25:18The raised edges tell you what the minimum height of your tread is.
25:22If the bump and the edges are even,
25:25it's time for you to visit the tire shop as soon as possible.
25:28But if the bumps are well beneath the level of the edges,
25:31you're good to go.
25:34What about that black grating on the microwave window?
25:37It's something called a Faraday shield,
25:40and it's there to prevent microwaves from getting away
25:43and turning the entire room into a Faraday cage.
25:46If the microwaves escape, your meal won't cook properly either.
25:50So yep, the cage is not there to make it difficult for you to see your meal while it's cooking.
25:55It's keeping the electromagnetic energy inside.
26:00How about a wrench compatible screwdriver?
26:02Cover your screwdriver with the end of your wrench and you can increase its torque.
26:07That's why the head of your screwdriver is designed the way it is.
26:10When you have odd angles, you can use this strategy.
26:15You've probably heard those myths,
26:17the blue side of the eraser can erase the pen.
26:20False.
26:20It's purpose is to erase a pencil,
26:23but in case you're writing something on heavier paper.
26:26The blue side can remove smudges you see after using the pink eraser too.
26:32Have you ever wondered why oranges in supermarkets mostly come in the red mesh bag?
26:38It's a trick to make this food look more orange and encourage you to make a purchase.
26:42An extra tip, don't throw away the mesh bag.
26:45Tie it up so you can have a small pot scrubber to clean your sink, kitchen, appliances, and dishes.
26:54You can see golf balls don't have a perfectly round shape.
26:57Their surface is covered with many little dimples,
27:00something golf balls didn't always have.
27:02At one point, experienced golfers started noticing how through time,
27:07older balls with imperfections,
27:09such as nicks and bumps,
27:11could travel further.
27:13Such things create turbulence in the air around the golf ball,
27:17which eventually reduces drag.
27:20So, manufacturers started producing balls with dimples so they could go farther and faster.
27:27You might have noticed that sometimes there are ridges in toothpick tops.
27:31It's more hygienic because when you break that off,
27:33you can prop the toothpick up on it,
27:35and it won't touch anything.
27:39Another safety feature you'll find,
27:41this time in your car,
27:43is a tab on your rearview mirror.
27:46With it, you can change the position of the mirror,
27:48so you don't get blinded if there's a car behind you with its high beams on.
27:52So, this little tab helps you control the glare of lights coming from behind.
27:56This feature showed up in the 1930s,
27:59but in the early 1970s,
28:01it became a part of standard equipment in most trucks and cars.
28:06Do you see that tiny hole on your iPhone right next to the rear-facing camera?
28:11It's a microphone,
28:12and it's there so your phone can record sound as you turn your camera around.
28:19Some cables have a thick cylinder towards the end of the cord.
28:23It's called a ferrite cord, or a choke.
28:26It's a magnetic iron oxide that stops high-frequency electromagnetic interference.
28:31For example,
28:33you know that annoying static noise you get if you bring your phone too close to a speaker?
28:38This interrupts your call,
28:39which is why cable cords with big cylinders are pretty useful,
28:43because they prevent these things.
28:46Do you know why nearly all luggage bags and backpacks have two zippers?
28:51It's way more convenient and easier to open in that way.
28:54But not just that.
28:55You can also lock these two zippers together
28:58to keep the stuff inside your bags safer.
29:02You know how toilets at public spots like malls
29:05have those big gaps at the bottom?
29:08It's primarily for better circulation of air.
29:10This type of door also makes it easier to clean the toilet
29:14or check if it's occupied if you're standing in line.
29:17Other than that,
29:19if you get stuck there and the lock gets broken,
29:21you still have a way to escape.
29:23You can just crawl out.
29:27Ever notice those plastic end caps on utility knives?
29:30And they also have scales on them,
29:33which indicates you may use them multiple times,
29:36but with sharp edges.
29:38You can separate the blades through these plastic end caps.
29:41Then, you can move the slider
29:43and bring the sharp blade to the front.
29:46If you've ever taken a moment
29:47to examine a regular grocery cart,
29:50especially their fold-out section,
29:52you probably noticed those metal loops jutting out.
29:55They're designed to protect the items you carry in your cart.
29:59You can use them to hang bags with soft items.
30:03You don't want to accidentally squish with heavier products,
30:06like bread,
30:07or easily breakable things, like eggs.
30:11Many coffee mugs come with curved notches on their bottom.
30:15When you're washing your mugs,
30:16put them against the rack at an angle in your dishwasher.
30:19This way, the water won't pool in there,
30:21so your favorite cup will be completely dry
30:24by the time you take it out of the dishwasher.
30:27If you're a McFlurry fan,
30:29you've probably noticed
30:30there's a square hole in the handle of the spoon.
30:33It's there, so you can attach it to the special machine
30:36that mixes the ice cream
30:37and your favorite toppings together.
30:40The machine has a bar
30:41that slips into this square-shaped spoon
30:43and then thoroughly stirs it.
30:46And you get the spoon
30:47so they can minimize the mess during the process.
30:50Quite neat, wouldn't you say?
30:53A regular milk jug has a dent on one side.
30:57Some might see it as a random design decision,
30:59but a dent has several purposes.
31:02One of them is to get bigger if there's a gas buildup.
31:06This happens when your milk is spoiled.
31:08So you don't even have to try to check this out.
31:11Also, the dent is there
31:13so the jug doesn't burst if you accidentally drop it.
31:16The dent allows the expansion space
31:18that deals with the sudden pressure
31:20that happens when you drop the jug.
31:24Dental floss.
31:25Sure, it's important for your dental health
31:27and it's easy to assume what you do with it.
31:29But dental floss is great in the kitchen as well
31:32because it's a very precise cake slicer,
31:35way better than a regular knife.
31:40Most kitchen shears have a serrated opening
31:42right there at the center
31:44where the blades and handles meet.
31:46It's something you can use to trim difficult herbs
31:48such as rosemary, thyme, or chives.
31:52Because of this opening,
31:53you don't need to pick the leaves off by hand,
31:55but de-stem them in one motion.
31:59The majority of gelatin containers
32:01or single-serving yogurts
32:03come with a tinfoil lid.
32:05And in most cases,
32:06you can use this covering
32:07as a disposable spoon.
32:09Just peel away the covering
32:11and after a couple of simple folds,
32:13you'll have a perfect little spoon
32:15for your midday snack.