I also have one on a office key (useful, it vanishes every few months), umbrella (useful, its left in restaurants and vanishes in the car trunk), laptop bag (us

I also have one on a office key (useful, it vanishes every few months), umbrella (useful, its left in restaurants and vanishes in the car trunk), laptop bag (useless so far, I never forget about it), and car (waiting for it to be robbed but its old)