I was looking at Garagelab's
latest e-mail newsletter and they had a video on this project developed at Harvard called the Soft Robotics Toolkit. It's an open source system that provides designs and component lists for you to make your own pneumatically actuated robots. The cool part is that you manufacture the sensors and the actuators yourself, they're primarily made from cast silicone. You make the molds using a 3D printer, SO, once I'm done with this Halloween stuff I think I might be playing with some goop!
check it out!Soft Robotics Toolkit