My printer is all black and reminded me of an arcade game "The CLAW!" It was an old chain driven gantry crane for robbing kids of their change. Well I decided to make a flimsy version of the claw mechanisim I had in my head. It replaces the red piece on the extruder, and turns your printer into a The CLAW! game. The top piece needs to be drilled out so the filament goes threw np. The bottom put on the filament , it friction fits. Then you have a rather clumsy gantry crane.

This is seriously tiny. Screws wont fit use wire , its cheaper. The connectors should have the claw closed with the two pieces together..

http://www.youtube.com/watch?v=6hfGwcPv6YM
For mine, 12mm extract closes it and 12mm extrude opens it. :D