Homemade upright bass...

(Click here for Link)

I've always thought the upright bass was extremely cool. They tend to be pretty expensive though. Some nifty fellow decided he wanted one and that they were too expensive, and he just made his own, mostly from cardboard and wood. Watch the video, it's extremely cool. I've seen Cigar Box guitars (which is just what it sounds like) but never seen anything quite like this.

He is also selling them on ebay for $49 plus $30+ for S&H... :/