I've been wearing a custom made "edc" watchband for several years. It's equipped with a compass, tiny custom made flashlight (the most frequently used light I own), custom 1" mechanical pencil, needle and thread, tiny spark lighter (removed from a cheap lighter), and 1/2" mirror. I've been thinking of adding a few safety pins, floss, loop, wire, some kind of sharp and a few other goodies. I've never had anyone, even the TSA, even bat an eye at it and it's so small, even the brass flashlight does not trigger an alert passing through metal detectors.