PixelBlocks are a lot like what might happen when Lego meets Lite Brite. Translucent pieces can be combined in different ways to create anything from a sculpture to a relief mosaic.
Audiopad is a MIT Media Lab project by James Patten and Ben Recht. They used a relatively common Media Lab interface that combines video projection, physical icons, and motion tracking to create a super cool music mixer. Creating music using Audiopad also results in a great visual performance.
Anya Hindmarch, a British accessories designer, created Be A Bag as a charitable promotion. She offers you the opportunity to transpose a photograph onto one of 6 different style bags. Check out the site for some examples and inspirations from all her famous friends.