late night design du jour — kinect tripod adaptor
I was going to cut an adaptor plate out of aluminum, but my pal Golan challenged me to do something on a Makerbot/Reprap that used as few non-printed parts as possible.
Final version requires one non-printed part, a 1/4-20tpi jam nut:
3D printable Kinect Tripod Adaptor
(If you have a high-quality printer, you could print a threaded insert.)