As a gift for his girlfriend, Michael Buschbeck has created an amusing device called the "Myst Box" which was inspired by the computer game from many years ago. It behaves as a series of puzzles that are in the form of switches, wires and other odds and ends which must be used in turn to solve the puzzle. Once solved the Arduino unlocks a small compartment which contains the final present.
Apart from using various devices as methods of user-input, the sketch is interesting in that everything operates synchronously thanks to using Michale's customised timer library. Furthermore, he explains the box in the following video:
Certainly something different, and an inspiring project to make your own creative devices. For more details and links to the sketch and library, check out Michael's website. And for more, we're on twitter and Google+, so follow us for news and product updates as well.