Tired of those boring mind numbing Jello shots? Well here is a guy who, presumably while not in that mind numbing state, decided to create a 3D printer with a legitimate purpose.
Creating 3D shapes inside the jello.
Jeroen Domburg’s friend was having a 25th birthday party at which jello shooters were to be served. Jeroen decided to liven these up by creating a 3D printer that inserted a needle into each shot and injected an ink made from banana liquor, food colouring and corn starch in 3D patterns like cubes and spirals. Even cooler: the main body of the electronics in the printer were harvested from superannuated DVD and CD drives, and the firmware for the printer is free software (TGZ) for your pleasure.
The interesting part is the spare parts twist. If you want to see more about how he did it or maybe get plans to make your own, here is the link.
http://spritesmods.com/?art=jello3dprinter&page=1