One of Austin Mom's group is doing a scavenger hunt for Austin Murals during March. They have several cool prizes.
For Moms that are geocahers, you can get extra credits by doing GC2TMBF "Murals of Austin" at the same time. The cache features other murals that are not in the contest and you can earn extra credits for other murals.
They also have a few other murals that are not in the cache.
Check out their site: http://www.rwethereyetmom.com/2013/02/austin-mural-photo-scavenger-hunt-with.html?m=1
If you have waiting to try this cache, now is the time!