I/O Brush: The World as the Palette

I know it has been around for some time, but I just love the I/O Brush developed mainly by Kimiko Ryokai at MIT. It is a paint brush but really it has loads of tiny cameras in it which take an image of what the bristles are pushed against, then "paints" it onto a special whiteboard.

Cool as bollocks. See the video of it in action. Kids love it.