My classroom is based off of a trampoline park. Almost the whole entire floor would be trampolines, besides the bad corner.
Also in my school I would have a ball pit, but it would be globes instead. When it was free time, you could jump in it all the time.
I also would have a dodge globe area where you play dodgeball with beach ball globes. If you catch a ball or you get out you say what country, state, continent, lake, or ocean your left thumb is on.