Laser Pointer Holograms
kgb1001001 writes: "A couple of instructors at Lake Forest College and the Kyoto Institute of Technology have put together a nice little page on amateur holography using laser pointer diodes. This home-page gives enough information to get started and also includes an order form for the photographic plates and chemicals needed to develop the holograms. Also, another page discusses the same techniques and materiels, but comes with some nifty pictures (2-d of course) of the final outcome."
Also look at this link