In Squid’s and Stampy’s Quest series they started building a bouncy house in the shape of a pie. As of right now (when I’m making this post) I haven’t searched for how to make a bouncy house in Minecraft but I experimented and made this:
I put sticky pistons underneath the floor and put redstone in all the spaces left. The gold pressure plates on the floor would trigger the sticky pistons and make the blocks beside it raise. If you would sprint around the room, it would seem like you bounce.
Since I can’t film my playing Minecraft, I can’t show you what it looks like when you bounce, but hopefully you can just picture what jumping around the House of Bounce looks like.