Dan and I are collaborating on creating an activity to share at the Faire. This is based on a suggestion from Kristen to make a mini lightplay just for your head... so we needed a description before we had an "it" here it is:

light play obscura
Close your eyes tightly... see the li ghts flicker

In this workshop we'll put your head in the dark...
Build your own head-sized light-play theater.
Combine mini-lights, motion, reflections and shadows to take your head on a trip.