War Amps

War Amps is charitable organization, one of the great things they provide are their key tags. You can sign up with them and they will send you key tags for a small donation. You put the key tags on your important key chains. If you loose the keys anyone can drop them into a mailbox and they will be returned to you free of charge thanks to the War Amps and their tags.
Pros:

1. You give to a good charity.
2. You get your keys returned should you loose them!

Cons:   none