Amazon has Engraved Dog Tags for $3.99 Shipped! Choose from 8 Colors for the Pet tags to choose from. It’s always good to have a few on hand. These have FREE SHIPPING and in my experience come pretty quickly (in about 1 week with standard Free shipping).

• These personalized pet ID tags for dogs and cats feature clear lettering and room for four lines of text on each side.
• The tags come in both large and small sizes. 
• Rectangle, star, circle, heart, paw, bone, cat, and hydrant shape options are available, so you can choose a pet tag customized to match your pet’s personality.

Similar engraved pet tags bought in-store are triple the amount of money! At this price, might as well order a few and have them on hand!