iPad becomes document camera

An art teacher colleague asked if I had a document camera available. She wanted to demonstrate to her students the day's project without the need to crowd around her (you can imagine the distractions).

Although I did not have a document camera, we did have an iPad with a VGA adapter and a projector. Over a weekend, my son and I made a trip to the hardware store and spent a couple of hours in the garage with a modest collection of power tools. The result if our brainstorming (and a failed prototype that I designed) was this: