The AxiDraw Drawing Machine (Legacy version)[This documentation is for the older-model AxiDraw, sold prior to February 2016, with white Delrin chassis. Click here for current model support.]
Have a look at See it working for some examples of what the AxiDraw is capable of.
EvilMadScientist have a Hershey Text extension for Inkscape - this is ideal for pen plotters like the AxiDraw, since the characters consist of drawing lines, rather than outlines like a regular font.
If you want to experiment with direct control of the EiBotBoard, see the main EiBotBoard website for full details of the serial commands available.
Remember, you can post any photos of things you've drawn using your AxiDraw to the public Flickr group!