This is sand

'A website for play. It changes the pixels on the screen into digital sand that can be used as building material for cosmic landscapes, Clemens-style sand paintings, mandalas and so on. This is a joint project of the designers Johanna Lundberg and Jenna Sutela with the Flash programmer Timo Koro. "We wanted to create a playground of colours and sound for people to play with us in our sandbox – within the computer screen".'

http://thisissand.com/