Dog-e-Tag

If you're a dog owner, hopefully you've invested in getting your pooch chipped just in case they get lost. The next best thing to do is to invest in a Dog-e-Tag. No larger than the tag you had engraved (limited 4-5 lines of information) at a pet store, this tag is 1 3/8 inches (36mm) around, weighs 3/4 of an ounce (21g) and is worn in a similar fashion to a common metal tag.
The best feature is that you can store up to 40 lines of information, and a large quantity of data such as cell phone numbers, pager numbers, e-mail addresses, county license numbers, rabies vaccine numbers, veterinary and neighbor contacts, etc. (courtesy of Noelle)