Toothbrush
The first brushes came from China, where the Chinese made them out of hairs pulled from the back of wild hogs. The kind of toothbrush we know came from William Addis. He worked on the toothbrush while he was in jail. First, he saved a bone from one of his meals and poked some holes in it. The prison guard gave him some bristles. Joseph tied the bristles into little bundles, cut them to make them even, put glue on the ends, and stuffed them into the holes. The company he started still make millions of toothbrushes every year.