I could be interesting to add support form WiiMote in Blender, especially in Sculpt mode, thus allowing "real-world" sculpting.

The WiiMote is maybe not accurate enough for some detailled designs, but should anyway provide some interesting new approaches to modelling, and it's not difficult to imagine funny "live sculpting" sessions.

It would be a very innovative feature, especially for artists, cheap (a WiiMote costs 40 euros), and probably not that hard to add to Blender since several Python libraries already exist to interface with this device.