Numb chucks: weapon made from number keys

KB at the 40% Keyboards blog created nunchaku from two keyboard number rows and a dual-headed USB cord.

Connected two FML macropads with a micro USB OTG cable. While the fiberglass construction of the FML would be quite sturdy, the USB connectors on the Pro Micro's will probably break off the first time you hit something with it.

Here's an article about the number rows, themselves a custom creation.