Did you know? You can make pencil drawings reactive to touch for use with your projects! It's really easy, and gives you a lot of flexibility in making interfaces for whatever microcontroller project you're making.
I put this together as part of my UnoJoy project, where we're using the Arduino as a platform from which to explore how we interact with video games. You can check out more of our projects for UnoJoy at unojoy.tumblr.com
, or more of our other projects at the Exertion Games Lab