I have been playing around with Chris Peregoy’s Pinhole Blender for a while now, and have enjoyed the results.
The idea is that the film is placed within a canister approximately the size of a cookie tin (I use the 120 version – he also offers a 35mm version). The film is wound around a spool, facing outwards. The canister has three pinholes, which allow for three separate exposures to different sections of the film, thus blending the images together.
While the idea for this may have been to allow for a wide panoramic image, I’ve had fun blending images that are related but not connected. Click on the image for a larger view, which is 1600 pixels wide and better shows the image.