All of the U.S. presidents have left a legacy in history and politics, but some leave even more: inventions and products they inspired. One president registered a patent, but many others had ideas, or at least gave others ideas. Washington invented farm machinery to do more work. Jefferson invented things, too, and discovered an extinct species that was named after him.
Roosevelt didn't invent anything, but he did inspire an enduring toy: the teddy bear. Roosevelt gave permission to use his name to toymaker Morris Michtom, who based his design off of the editorial cartoons of Clifford Berryman.