A. Square from the Adafruit customer forums writes -

(OK, calling it a “hack” is an exaggeration, but I couldn’t miss the opportunity for the double entendre.) After building my Drawdio, I realized that I didn’t have a thumbtack to attach it to the end of the pencil (not Adafruit’s fault, I had just purchased the circuit board). So, I decided to take it in a different direction… It’s very simple to build, once you’ve made the circuit: find a knife with a non-metallic grip (wood, plastic, or rubber should all work). Attach the Drawdio to the handle — I used a zip-tie. Using copper tape connect one end of the circuit board to the blade, and the other end to the handle so that your hand will be touching copper when you hold the knife. That’s it! To use it, hold the Syntheslicer in one hand and a fork with a metallic handle in the other, and start playing with your food! Please don’t use your Syntheslicer as a weapon. Also, I wouldn’t recommend waving it around in public, especially in Boston: they’d probably think it was some sort of stab-bomb.