I've done a couple more tags. They seem to work out great. The shrinky-dinks become plastic when you bake them so they can't possibly break. I'll probably make one for my dog now. Anyway, my only hang up is with the loop to go through the hole. Basically I don't know what kinds of collars people have on their pleos, if any. The ones I found on Ebay look just like tiny dog or cat collars which already have a metal loop built in for tags. That metal is too big to go through these holes, so tiny metal loop attachments are in order. I have them, but I won't know how they look until I get my Pleo and collar and test them out. However, I can say the tags themselves are done. I'll be updating my Plog once my Pleo arrives and add some pics, and make a store here once I get it all settled.