We do a growing number of large format mosaic projects. These involve collecting or crowd sourcing fan avatars from Instagram, Twitter, Facebook or via direct upload and turning into a fun engaging mosaic poster that are used as prizes, sold as part of merch packages, used as CD cover artwork or turned into interactive experiences were fans can find and tag themselves once the poster is created.
This project for Kirk Franklin involves setting up a two-part app that allowed fans to submit their photos for inclusion in the mosaic (visit: http://www.tweematic.com/losingmyreligion or read about it here).
The final result was an attractive fan sourced mosaic poster where fans could search for their picture. The resulted badge could also be shared on social networks for added visibility. You can view a large version of the poster here.