Boy, was I bummed when Polaroid stopped producing film. I went to a photography school nestled in the mountains of Montana to learn the art of Polaroid film manipulation. There are three basic types: image transfers, emulsion transfers and emulsion manipulations. Image transfers are made by projecting a 35mm slide image onto Polaroid film, then transferring and processing the image onto watercolor paper, tile, or other substrate. Emulsion transfers are similar, but you peel off the film emulsion and transfer that onto your substrate. The third type is the simplest, you just take any dull-point implement and squish around the emulsion immediately after taking a Polaroid photo with SX70 film. (I first discovered that you could do this when I worked a graveyard shift as a stockbroker at Charles Schwab. A world of adventure awaits at 3am.)