Thanks for sharing all of your labeling ideas. I actually contacted someone @ the ceramic league of miami to make me some tags made out of clay. She is going to put a color glaze on one side and leave the clay naked on the other side for me to stick a label on. It's going to cost me 50 bucks for 100 tags--I didn't think it's a bad price. They are 7 inches x 2 inches wide, with a hole to hang the label. I am hoping this will work out.
She also makes pottery so if she does a good job, she is going to do lots of custom pots for me.