Ceramic Decals have become quite popular. The following site ( Milestone Decal Art) has the "best" selection I have seen. They also have a You Tube video on how to apply the decals.
How to apply the decals:
Justin Rothshank will be teaching a class on decals, at Penland School of Crafts, in July. Check out his work... http://rothshank.com
You can purchase on ETSY...