And, if you're interested in Color 3D Printing you should check out http://www.figureprints.com where amazing custom prints of World of Warcraft characters are printed.
This can be used as a cookie cutter, Play-Doh cutter, or even for rubber stamping. I'm sure there are tons of other uses as well, that I haven't thought about yet. See a video of it on YouTube here: http://www.youtube.com/watch?v=lgoOA82qF-Q
Custom shapped cookie cutter. Also can be used on other materials like clay or Play-Doh. Just draw a picture on a piece of paper, or your computer or iPhone, and send me the image. I'll create a cookie cutter shape for you.
Visit my Sheltie shaped version here on youTube so see one printed in Aluminide. http://www.youtube.com/watch?v=lgoOA82qF-Q
I'm a 2D & 3D graphic designer. I've been designing artwork and models for games, simulations, and web pages for almost 15 years now. I've been involved in 3D color printing for over 3 years. I'll be adding more models soon, so keep checking back.