This is a pretty cool printer designed by a student. It prints in a substance that eventually grows grass. The possibilities are pretty endless for those people that are into gardening.
http://vimeo.com/68193572
http://www.3ders.org/images/print-gr...-printer-2.jpg
Credit goes toArt students Tina Zidanšek, Danica Rženičnik, Urška Skaza and Maja Petek in Maribor, Slovenia