A small, simple keychain in the shape of the surprisingly scary little creeper from Minecraft.
UPDATED 2011.10.27: V2 now has facial features and a better chain attachment.
The design itself belongs to Mojang and all that. Go ahead and buy Minecraft if you haven't already: http://www.minecraft.net Be warned though, it's highly addictive!
I've had this model for a while, but didn't know what to make of it, when someone suggested a creeper keychain. So here it is.
The picture with the key attached is the first test, I'm getting there, but there is still calibration to do on my Mendel.
The Minecraft/creeper related "cartoon" is best viewed in orginal size, or here: http://repraprip.blogspot.com/2011/03/coalition-of-obsessions.html
Print. Paint on a cute litte face if you like. Enjoy.
The stl model is 55mm/units tall, but you can easily scale the model in OpenSCAD.
Don't know how visible the face would be at this scale, but I'll update the file when I've done some tests.