The techno-cookie-jar is installed in a school and issues a cookie every time a pre-defined tweet is twart. To avoid attacks from the Cookie Monster the machine will only issue a cookie to a user every 5 minutes and flash red if they’ve eaten too many.
UID Cookie Box is another brilliant project powered by an Arduino board to control the servo motors and an XBee module to handle the wireless comm. The box is coded in Node.js and Breakout.js and they’ve very kindly open sourced it on Github.
Source: Three Percent Done