Smooshees
The Smooshees were little plush dolls made by Fisher Price in the mid to late 80’s. They came as animals or little people, and were basically flimsy enough to stuff (smoosh) into small places. There were a number of Smooshees accessory items you could buy to stuff your Smooshees in, such as cars, houses, hot air balloons, stables, rocket ships, and a variety of lockets (some of them wearable). The Smooshees were each sold separately, and each came with some plastic doodad they could be stuffed into, like a block of cheese for a mouse, a fire hydrant for a dog, a fish bowl for a fish, and a car/camper for a little girl.