Also called the Thingmaker, this toy used a series of molds and a small hot-plate device to create rubber-like toys, often in the shape of bugs or other creatures. It debuted in 1963 and was reintroduced in the 1990s with a safer version of its heating device that was similar to the lightbulb in Kenner's Easy-Bake Oven.
TIME reporter Allie Townsend picks the 100 most influential toys from 1923 to the present