The
PopSci guys take on a fun little project with this
musical stash for your cash. They turn an Altioid box and a musical card into a theft-detering money box. I'm not sure why exactly you'd need this, hopefully it's not because your coworkers are actually stealing from you the way these guys suggest! Still, you could hide anything in there and the musical alarm would let you know if somebody was breaking into your tin. Personally, I don't want a silly song playing every time you go to pay for coffee, but I could find other uses for it I'm sure. It's a simple, clever idea. It's not hugely practical, but it only takes 5 min to put together and it could be fun setting somebody up.
Source
A Free (And Chic!) New Way To Display Flowers
Make A Can Opener Work Like New Again
