I saw this a while back and thought it was cool. It's this Adam Frank lamp called Reveal that projects an image of a window with a moving tree outside of it.

I'd be all over it if it didn't cost $400. Fancy stuff is expensive.

While I was looking through their site I saw this really cool art installation they've done. Cool, and kind of freaky. You're used to seeing shadows of people, but what if you saw a shadow of a person, but no person? And what if that shadow tried to follow you? It's hard to explain, so be sure to check out the video.