Chewing Gum - While experimenting with ways of using the traditional Mexican gum chicle as a substitute for rubber in toys, boots, and clothes, inventor Thomas Adams absentmindedly popped a piece in his mouth and was suddenly struck by the possibility of adding artificial flavor.
Post-it Notes - While working on a chemical formula for stronger glues, Spencer Silver, a researcher for the 3-M office-equipment company, accidentally discovered super-weak glue. It was dismissed as useless until a colleague, Arthur Fry, thought of applying strips of it to paper.
Potato Chips – In 1853 Native American chef George Crum, working in Sarasota Springs, New York, was frustrated by a guest who kept sending back his French fried potatoes, saying they were too thick. In a fit of pique, Crum cut them into wafer-thin strips and fried them. They became a house specialty.
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