
Seen this before, but it is very cool - maybe I'll make some of my own, from ditchwitch.

Paper has been covered with graphite dust and lasercut. The fragile designs are embedded between two layers of fine tissue and are wired to a microchip. This so called “Auduino” developed by Peter Knight works like a synthesizer. By touching the Noisy 5 the user alternates the sound in pitch, volume and decay.
To see more See Berit Grinke Flickr.com page or at her website.