Twin Canon Powershot G5. Synchronised by hand. With skill and luck, I can get good stereo photos of moving objects.

Samsonite case for the G5s.

Twin Canon IXUS70. They are synchronised through the USB port thanks to 

the CHDK hack wtf.

Single camera mirror stereo rig. Not the best thing in terms of results or portability.

Twin Pentax K10. I made this for work (CSIRO).

My collection of vintage Stereo Cameras