I found papercraft model for Creeper from Minecraft http://www.minecraftforum.net/topic/18345-the-standardized-papercraft/ and thought that it would be nice to have in Assembly 2011.
Papercraft creeper. Photo by Petri Haikonen
During Assembly I thought that it would be nice to have little bigger creeper and tested printing one. When printed I noticed that its body was big enough to house a Arduino and head had room for servo.
Arduino and servo placement
Arduino powered creeper. Photo by Petri Haikonen