A backpack, iPhone, keyboard, a jet pack – well maybe not a jet-pack -- but hey, you use these things every day! Still they might not be as straightforward as you think! Lots of ordinary objects have secret features that unlock their FULL potential! For example, have you ever used those flimsy, ribbed ketchup containers they have at fast-food restaurants? You probably wondered why they don't make them a bit bigger. What most people don't know, though, is that those ribs should be pulled outward - thanks to this trick, the container can house way more sauce! Interested? Then check...
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