I am sorry if this is repeating but it didn't seem to post:

I use the Lucky Pet tags that the poster named Laura mentions. I ordered
the plastic black hearts 10 years ago for my cats and they wear them every
day. They look like brand new. I just ordered another for my new kitten.
They are a wonderful company to deal with and I highly recommend them. The
tags are small, very light weight and very easy to read.

Barb