Lithophanes and Height maps seem to be a popular subject these days. I found an interesting picture of Gandhi on a stamp.This is a Lithophane of Gandhi on a stamp.Any number of lithophane prints can be made by simply changing a file name in the .fab script.1) Download 2) Print 3) Rejoice!The native size is 256x256, so if you're going to print it, you'll probably want to scale it somewhat.