Today was a hackathon. After being introduced to this project a few years ago at university I was keen to build one for myself. Today's product is a CNC writing machine. Capable of business card sized images this 3 axis cnc machine is the size of your palm.
Check out the full project page http://www.piccolo.cc/ many thanks to Tiago Rourke for the insight and for developing an incredible piece of engineering and software. I was looking to build on this project today but the powers at be had other ideas. Look out for updated versions of the CNC writing robot in the upcoming weeks.