THANK YOU for the half bakery link... it looks like fun.
the cardboard box upright bass is somewhat of a pet-rock, with the addition of being able to serve a reasonable function. The box ressosnating is actually where the sound comes from, it wont last forever but the box itself is replaceable. I'm very proud of my machine head tuners that are nutz-n-boltz with washers. You need a small wrench to tune it, but my box bass hasn't gone outta tune for almost a year. (no kidding)... i need to find a gig bag to make it complete, something made outta that house wrap stuff.