Deep Blue: Christmas Tunes

If you're using an old browser, look away now. Upon entering the highly advanced site of Hamburg agency deepblue's Christmas card, you're warned that "This is an HTML5 Experiment. Please use a modern broswer," in a sneering tone that makes you feel completely outdated. But once you get past that, the agency's experiment is cool, letting you create a personal tune by combining the ringtones of 12 devices. You can connect your phone to the page, and use it as a keyboard to compose your masterpiece.