Cyanotype picture technique is over a century old. It is a non-silver hand developed process that uses the sun to develop images onto special cyanotype paper. It is also a very basic type of picture processing. You can use everyday objects or digital negatives to make your image on the paper. This was a very fun and easy project that I was able to do with my daughter. She enjoyed seeing the picture rapidly develop in the water and how much the peroxide solution changed the color.