@Jacob Cleverdon I work on teen programs for a library. You order cyanotype canvases and have the teens place objects of their choice on them. Then you take the canvas outside and let it sit in the sun for 5-150min, the sun turns the uncovered canvas blue and leaves a white imprint of the object. It looks cool and is easy to do. The pictures are not the best, but you can find really intricate ones Google image search.