Electronics & Sensors

Hummingbird Duo – PCB hardware to connect sensors and laptop
Common Parts Library for Prototyping [link]

Circuit Stickers – flat conductive stickers for attaching components to paper

Kamigami Robots – fold-up paper robots. Inspired by Robert Full‘s research on animal inspired robots at UC Berkeley.

SparkFun Electronics – Arduino, LilyPad Arduino, Raspberry Pi, sensors, IoT supplies and many other electronics resources.  The site also has electronics tutorials and forums.

Grove Sensors from Seeed Studios – Hardware innovators, sensor supplier and forum.