Finn-ger.

The article about the robotic arm reminded me of a story from a while back in which a Finnish computer programmer had his lost finger replaced with a USB drive!

http://www.telegraph.co.uk/news/newstopics/howaboutthat/5005118/Computer-programmer-from-Finland-has-lost-finger-replaced-with-USB-drive.html

I'm not sure it's something I'd consider myself haha... I'd get a little squeamish over it... But it's a fun idea and it'd be great to see other people doing similar things with other tools... maybe one for each finger... hmm...