Plastic water bottle
An easy way to separate egg yolks from egg whites is to use a plastic water bottle. Get an empty bottle and then squeeze it. Slowly release the pressure directly over the egg yolk. This will suck the yolk into the bottle and hold it there. From there, simply press the bottle over the bowl you want to put the egg yolk in.
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Button
This hack will keep you from worrying about losing one or both of your favorite earrings while traveling. Pack them like this and your problem will be solved. Get a spare button and lock the earrings into the holes. Then pack them away! The button prevents them from separating.