Laser testing

I'm currently working on an interactive brief, it requires us to make an interaction that doesn't use a keyboard or mouse. It also needs to have a good use, like an educational or informative value. I've chosen light as my subject. I'm using a laser in my interaction piece, I've been testing it out today and pretty dam cool. This laser can create shapes and patterns and can even react to sound.

Here's some photos of it on Flickr.