Digging up an old thread - I have 3-4 running around - things like an ARC-AA is hanging on one, hanging in the upstairs bathroom closet, and a few other pieces of emergency gear I might want to find in the dark - plus one of my 3 cats has one on he collar - so I can find her in the dark - as soon as I get some more, the other 2 will have it. #4 cat (RIP Tux) had one too, but his collar was lost at one of his hospital stays