Make your own tags, any shape you desire. I made mine key shape 'cuz I take my keys with me when I run or go to the gym.
Any thin metal, I used metal from a PC power supply case.
Metal sheers to cut
I bought my tools at Harbor Freight for about $15.00 usd
Step 1: Dog Tags, Id Tags, Workout Tags, Pet Tags
Use one of your keys to trace the shape (or any other shape you want) onto the metal,
Mark with Sharpie the outline
Cut as desired
File avoid sharp edges
Engrave your desired information, I used the same info that was on my Army tags. Allergies, SSN (not recommended any more), religion, blood type, etc.
Step 2: Dog Tags, Id Tags, Workout Tags, Pet Tags
Show off your new tags.