As much as I love trampolines, I don't quite have space for one, and seeing as I'm without child, I'd be a little embarrassed to buy one. The Thor Høy Spring Bed ($3,730), on the other hand, I wouldn't be ashamed to own. It's made of plywood and car springs with a slatted base, and the springs respond regardless of the firmness of your mattress. Pretty fun, I must say. It does have a bit of a bachelor pad vibe to it, but jumping on beds never gets old, does it? There's also nothing like squeaky bed springs to rouse your neighbors' curiosity. Would you like to own one of these — even just in a guest room?