Once upon a time there was a blinkofant. Then it got scrapped, then it got saved by metalab, then it spilled to nearby hackerspaces. DevLoL has a huge bag of those 8x9 LED modules.
Sightings, iterations, and hacks
References and datasheets are cool
Arduino code: https://github.com/parasew/blinkofanten
ruby code, 2012 supergamdevweekend winners: https://github.com/Metalab/elle-and-the-spooky-arrow
hackerspace Regensburg has some as well: https://www.youtube.com/watch?v=uGXZWj93Q00 https://www.youtube.com/watch?v=CC8B907D1co