A little off topic - but interesting all the same.

This is a 3D-printed robot that weighs just 73 g including battery and control board. A six-legged, sprawl-tuned robot with a variable leg sprawl angle in the transverse plane to adapt its stiffness, height, and leg-to-surface contact angle.

http://phys.org/news/2013-08-3d-printer-built-robot-insect-video.html