Here's something that managed to slip beneath our radar but is definitely worth the double-back: Musiblocks. The design project consists of a central control block at the base of the tower with an embedded force sensor and 6 circular connectors. Add more (or heavier) blocks to increase the volume or twist the block atop the base to switch tracks. The only block with any electronics is the core, control block at the base -- the other blocks are just hardwood slabs with tin conductors. Remember, if Sony can mass produce the Rolly, don't be surprised to see Musicblocks go retail sometime soon. Video after the break.
[Via Yanko Design