Check out this Useless Machine built with Laser Cut Plywood Hinge. You have probably seen a useless machine before, it is basically a machine that uses a small arm to turn itself off as soon as someone has turned it on. It is a really fun concept. Martin Raynsford has built one in a cool custom case. His case doesn’t use a hinge as you would expect, instead he is using a cool lasercut plywood hinge system that you might have seen on Make and Boing Boing recently. If you have a laser cutter Martin has made his design available for anyone who would like try their hand at building it.
On a side note, Martin is going to try to make a new laser cut thing every day for an entire year. If you have a laser cutter you might want to keep your eye on his site for some inspiration.