Small tags have very little room for information ...
That being said, I got a very nice "tag" for Bella at the Mall, in one of those jewelry kiosks. I got a vermeil (gold plated silver) charm for her, which they engraved on the spot. You can at least put your cell phone number on it, even if you have to split the line.
You may end up needing some black shoe polish to fill in the engraving, to make it more visible. O'wise, to those of us who have old eyes, the print disappears. But you can get something a little more "unique" than the standard dog tag when you go to charms instead.
BTW, have a nice vacation