Have you ever wondered why some cups have a tiny ridge on the bottom? Or the reason why some backpacks have that odd square patch? We’re here to tell you that both of these details aren’t just an aesthetic choice, they all have a purpose, as do the other 9 hidden features we’ll show and explain to you below. Not only is it fun to find out the purpose of these secret features, but it’s also quite useful!
1. No, the small little drawer right beneath the oven isn't for storing pans, it's actually for keeping freshly-cooked food warm
2. Cups from IKEA often have a ridge at the bottom and it's not a mistake - these ridges ensure that water doesn't collect at the bottom of the cup when you're cleaning it in a dishwasher
3 Do you see the marking "12M" near a picture of an open jar on cosmetics packaging? It means that the product will expire 12 months after opening
4. The top of applesauce can be easily turned into a spoon
5. Wooden hangers are made of specific types of wood that repel moths and other pest insects
6. Those tiny holes on plane windows are very important as they level out the pressure in-between the windowpanes and prevent windows from cracking
7. Ever wonder why some people store peanut butter upside down? Well, this way all the oils collect on the bottom and you don't have to mix it before use
8. The black dots on the glass door in a microwave are actually crucial. They are called a Faraday cage and they block electromagnetic fields
9. One of the reasons why headrests in cars are detachable is to let passengers break the car window and evacuate safely in case of an accident
10. A built-in solution to preventing the straw from rising and wobbling around in the can few people know about...
11. Ever wonder if that odd square patch on some backpacks had a purpose? It was actually first developed for hiking backpacks as an attachment through which you could pass a string and attach various equipment. It's called a lash tab.
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