Uses for Old Photographs?

I freecycled out a few photo albums that I found in the trash. I took out about 75 4 x 6 pictures. These are of people I do not know so keeping them is not my concern. I just have a hard time tossing this much potential crafting material.

I'm scouring the web right now looking for a creative use for old photographs. If you know of anything, please comment!