Smallest digital 3-axis gyroscope pcb for arduino? What is the smallest size digital 3-axis gyroscope pcb compatible with an arduino that I can buy or maybe make if its simple enough. I need one really really tiny probably around 0.8x0.1x0.5 (doesn't have to be that small but the smaller the better).

Thanks,
smallest board is no board.  pick a small BGA or LGA shaped accelerometer and superglue it face down to the arduino board then solder fine wires beween the chip terminals and arduino terminals.

search digikey for 'spi accelerometer'