Bad Tags on Etsy or her own webpage. Some of them are hilarious (and maybe not quite PG). Atlas has 4 now and they still look new. We’ve gotten some compliments on them too (when you can see them through his fluff).
And for pure fun but durable, Dog Tag Art. I just bought Bucky Keep Calm, Eat Cheese and Ginger's is Hi, I'm Ginger. Previous ones were 2.5 years old and except for some chipping at the loop great condition. Needed to update the info otherwise I would have resisted.