Now that I am definitely keeping my boys, I am looking for cheap ID tags for their collars. I found "Petmate by Aspen Pet Aristo ID Tubes" online, and they look like a neat idea. They are a little tube that unscrews, and holds a piece of paper with any information in it (that you can fit). Has anyone used them, and are they better than a simple tag? I like my animals having such things, just in case they get out, but don't want to waste the money if it just falls apart!