I still like my idea...just make a giant ass waterbed on the floor of your room..that would be trippy as hell...
i have a futon mat on the floor of my tiny living room, so i have to fold it up every day because otherwise it'd be in the way, and the kids would walk on it with their dirty little shoes. i hate grit in my bed. have to have clean sheets, and brush the grit out before putting the blankets down.