I had the fighting men. Never turned out right - always had wire popping out.
Thingmaker & Vac-U-Form by Mattel 1963 - 1964
Creepy Crawlers was the first Thing Maker set made by Mattel in 1964. Set consisted of die cast metal molds. You filled these molds with different colors of a liquid substance called “Plastigoop.” Then, heat the mold on a open electric hot plate - which was included in most sets. When the mold cooled you would have a neat rubbery figure. I can still remember what the cooking plastigoop smelled like - very distinctive!
Other sets included: Creeple Peeple, Fighting Men, Fright Factory, Jillions of Jewels, Incredible Edibles, Fun Flowers, Mini-Dragons, Picadoos.
https://timewarptoys.com/toptoys.htm
Had the Thing Maker,a wood burning kit and the RONCO glass bottle cutting kit to make drinking glasses out of beer bottles.