One of the nifty little techno-trinkets Solarbotics was handing out to lucky folks at the Faire was their new NunChucky. This tiny PCB allows you to utilize the Wii Nunchunk as a project controller on a microcontroller module without having to cut the connector off the Nunchuck (so you can still use it with your console). The thoughtful design on the NunChucky board features two sets of interface pads, lock notches so it securely “clicks” into place when plugged into the controller, and tie-down holes for securing ribbon-cable extensions. The board comes with both 4-pin male and 4-pin female headers. It retails for US$3.
NunChucky I2C breakout board