I don't remember what I was looking for or who's page I found this blog on, but I thought it was awesome. I can't wait to find a really nice thick piece of cardboard and try this technique out myself. I always wanted little question marked boxes above my head (even if I can't actually headbutt them and get something that makes me spew fireballs...) LINK.
I made a cardboard box upright bass using scrap oak flooring as the neck, and i made a pickup by breaking away the plastic casing of a Radio Shack Science Project Buzzer, and strings are weed whacker twine and the tuners are faucet-spiggots.
The cardboard bass plays great and sounds wonderful.
