If you want to hook up some unusual buttons up to your computer, there are a couple of ways to get them to appear as USB hid devices. A presentation I saw at Maker Faire mentioned Teensy USB, ~$20, and another I've seen is Makey Makey,[1] a possibly more versatile device, on Kickstarter and ~$35.<p>The posted solution requires custom software, but the above are more customizable yet require nothing special be installed.<p>[1] <a href="http://www.kickstarter.com/projects/joylabs/makey-makey-an-invention-kit-for-everyone" rel="nofollow">http://www.kickstarter.com/projects/joylabs/makey-makey-an-i...</a>
Somebody call up JWZ and tell him that someone found a way to make decals opaque enough for a macbook. He's been trying to crack that puzzle for years.