If you're a devotee of this ancient cocoa-bean confection, you may be drooling all over your screen right now. How did seeds from a weird little tree snare the hearts (and taste buds) of the world?
Edison, Bell, the Wright Brothers -- sure, their inventions changed the world, but they didn't tend to think up much for the kids. But that doesn't mean there haven't been some good ones over the years. So pick up your pogo stick and hop along to find out five of our favorites.