I have gone into a deep rabbit hole with Mold-A-Rama data. If you did not grow up with Mold-A-Rama, it's a machine that creates a souvenir plastic toy IN FRONT OF YOUR OWN EYES. Commonly found at zoos and museums.
117 currently operating machines that were made in the 1960's. Operated by 2 companies: Mold-A-Rama in Chicago (mold-a-rama.com) and Mold-A-Matic in Florida (replicationdevices.com) Chicago: 27 Florida: 35 There are some privately owned that aren't in this count.
What you don't get from images is the retro novelty, smell, feel or experiance of these. They smell like melted plastic, are hot to the touch, and you can peel away the warm plastic with a fingernail. @WBEZCuriousCity has a great a story: interactive.wbez.org/curiouscity/moldarama
So what are the molds of? You mostly get odd colored plastic figurines of animals.