I've created a few collages from photos of insulators. Here's one of them. This one moves from green to blue going bottom to top, and from light to dark going from left to right. I made the pieces transparent in Photoshop and overlapped them, simulating what glass would actually look like when overlapped like this in the real world.

I've got more in the works, and hope to eventually have a couple large enough to use as screen backgrounds (wallpaper). Anyway, I had fun with it and thought I'd share.