Crazy cool idea on Kickstarter getting lots of backers currently. It seems to be able to turn anything (or anything playdoh-y) into a controller connected to a computer. Potentially really good for prototyping hardware innovations.
MaKey MaKey is an invention kit for the 21st century. Turn everyday objects into touchpads and combine them with the internet.
— MaKey MaKey: An Invention Kit for Everyone on Kickstarter