Stuck for ideas ?
Here are a few example dog tags to get you started.

Our Dog Tags are excellent Value !

MILITARY STYLE DOG TAGS - INCLUDES SILENCERS

Brand new, blank pair of dog tags,rolled edge, as per issue-USA type M45. Made from aluminium alloy, non-marking, non-allergenic. Comes complete with 2 chains and 2 black silencers.

The long chain is approximately 24", the short chain is at least 5" long.
The silencers can be used if you want to be quiet.

Design your dog tags now!