Tim Noble and Sue Webster are a London-based artist duo that creates amazing shadow art installations using carefully arranged objects. They use everything from trash to metal cans shot with BB pellets, arranged to cast shadows of people and skylines on the wall when a light is shined from a certain direction.
You can find more of their artwork over on their website here.
Thanks for sending in the tip, Adam!
Image credits: Photographs by Tim Noble and Sue Webster and used with permission