Using the McEdit program, I was able to create a giant trampoline that when you jump on it you go sky-high! Thanks to SethBling who showed me, in a video, how to edit potions with an McEdit filter. I am thinking about adding a net to it but if not, this project is 100% complete! Make sure to put the potion on during creative because there is only 1 of it! And don't worry, it's a splash potion of 500,000 seconds so that you can use it on your friends and it will last pretty long. Also play on peaceful in case mobs decide to spawn under the trampoline.

Also, remotely north, lies a trampoline I constructed from primed TNT spawners and water that I failed to follow SethBling's directions right on how to make it. Anyway, I hope that you have fun bouncing on it.