“As a part of her studies at ECAL, joelle aeschlimann has created a music box prototype for the iPad. the ‘little boxes’ project consists of three separate devices that interact with the tablet to create melodies and animations. replicated to work like the traditional player, the new digital iteration is constructed using rubber tips from commercially available pens, and a conductive metal crank. The adobe air for iOS software recognizes when pressure is applied to the iPad, and when the rotating mechanical movements are turned by the lever, music and visual content are generated.
source:
lovevoll.com 
Christmas is coming up…are these available for purchase?