I'm always surprised at the inventiveness of LEGO builders. Just when I thought I'd seen 'em all, comes a new amazing creation.
Take this working LEGO safe, for instance. It's built with LEGO Mindstorms NXT. It has a five number combination lock (that translates to over 305 billion different combos) and even a motion sensor so it can't be moved without the alarm going off.
Check out the video and more info at Slippery Brick: Link - Thanks Jayne Howley!
(And if you think that's cool, check this one out: a working LEGO slot machine and a LEGO Shoot Out game)
Maby it would work in a legomation?