Photocopies of photographs allow you to play with the sizes and shapes of the images: enlarge some areas and cut them into silhouettes; shrink others to fit inside stamped frames; or trim away uninteresting portions of backgrounds to make unusual shapes. Plus, photocopies allow some creative room to work with color Polaroid photos. Black-and white Polaroid photos can be cropped, but color Polaroids will separate into thin layers.
When making photocopies of your photos -- color, sepia-tone, or black-and-white -- do it on a color photocopier. The detailing in the black-and-white photo is all but lost when copied on a black and white photocopier. The middle tones go very light or very dark, and you lose all the fine detailing. See how much more closely the color copy, right center, resembles the original, while the black-and-white copy appears muddy.