Jason has a cool item on Hackszine about lo-tek “abrasion holography:”
Typically the creation of a hologram involves lasers and various other expensive equipment and materials. William J. Beaty figured out a low-tech way to create your own holograms using a simple abrasion technique that requires only a compass and a chunk of plastic. He came across the idea while walking through a parking lot, noticing strange hand prints that seemed to float above or deep inside the surface of polished car hoods.
Abrasion Holography – Link
DIY hand-drawn holograms – Link