This is a mirror made of wood:

It was created by New York-based Israeli artist Daniel Rozin, who uses an invisible matrix of cameras, motors and computers to allow non-reflective surfaces such as wood to display an image like a conventional mirror.

Here’s a video of his piece ‘Trash Mirror’ that demonstrates this better than I can really explain it:

The cameras detect movement, and dictate the position of the bits of rubbish, giving the impression that it is reflecting the image.

Imagine what it would look like if you had a whole room lined in this technology. I think I might enter it for next year’s Turner.