If you've ever amused yourself playing with cloning in image-editing programs, you'll be entranced by this prototype from MIT's Media Lab. The IO Brush has an embedded camera that can take both still and motion shots. Built-in force sensors cause LEDs that surround the camera to turn on whenever the bristles are pressed onto a surface. You can then "paint" whatever you've shot onto an interactive screen.

To see some kids using the brush, take a look at the fascinating video at MIT's site. (And don't miss the nutty soundtrack!)

[MIT Media Laboratory, via ShinyShiny]