I'll give you three.
1. If you can find a dresser or a large table near a bed or something, jump off and try to do something in the air. You could also use two air mattresses for extra bounce.
2. Get an air mattress that has a velvet sort of coating and slide down the stairs on it. You can jump and bounce on it when you are going down.
3. Set up pranks and stuff. One prank is where you put tape on the sensor of the mouse. They go crazy trying to figure out what's wrong.