KillDozer
thingiverse
I'm really impressed by its potential - even if it's not perfect yet. I think printing it out would be an awesome idea, actually.
Download Model from thingiverse
With this file you will be able to print KillDozer with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on KillDozer.