You can do something similar, although not quite as intricate, by simply pointing your webcam at a computer screen that is displaying the webcam-feed. You get

You can do something similar, although not quite as intricate, by simply pointing your webcam at a computer screen that is displaying the webcam-feed. You get infinitely repeating patterns that respond in beautiful ways to subtle tilts and nudges of the webcam. It's really pretty impressive and worth 5 minutes of your time if you have an external webcam around.