An offshoot of the military/law enforcement/firefighter/ems/emergency preparedness sector of the world is the Every Day Carry bunch.
"EDC" is the stuff you have with you all of the time both because you use it a lot and/or because you might need to. EDC is everything from handguns to keychain-carried precision tweezers.
Boy Scouts and Girl Scouts, whatever their various organizational nomenclatures, are to always "be prepared". Military and former military folks are trained to be that way. So are LEOs (law enforcement officers), EMS personnel and firefighters. Ditto emergency management personnel. Outdoor enthusiasts are sometimes educated the hard way to have the good stuff with them.
When I was a kid, boys carried a pocketknife everywhere. Girls wore clogs as force mulipliers added to their naturally superior foot aim to make a swift kick in the nuts a permanent defensive measure. But I digest.
I stopped carrying a pocketknife when I stopped hunting/fishing. I saw no real need to carry one here in the big city of Seattle.
Besides, sharp objects are frowned upon by the feministized male establishment here ("feministized" meaning not "feminine" but conditioned by bitchy broads to not even want a sharp shiny thing in your pocket due to your inherent and eventual and unavoidable desire to use it against a womyn).
As I've posted about though, my new job creates a need to carry some stuff with me.
I got a Fenix LT2 AA-powered flashlight because I needed something bright that wouldn't blow a bulb or fall down and not get up, to shine into the dark recesses of buildings built before World War I.
I got a pocketknife - and let me tell you, knives have come a loooong way since my days as a bareladded foot. The knife is a
Spyderco Dragonfly with a plain edge and reinforced plastic resin handles (I paid WAY less than the MSRP). It weighs about nothing and comes with a molded-in pocket clip.
I got some Bison aluminum tubes for my eventual keychin EDC rig. Pills, hearing aide batteries, a match or two, small parts to things I'm working on, all fit nicely in these tubes.
Over time, I intend to buy/make a mini prybar, get a smaller "keychain" knife, buy another small light and a couple of other things to add to my EDC rig.
One of the more surprising things I've purchased is parachute cord. It's not surprising because it's rope, it's surprising because of what I want to learn to do with it.
Using "paracord" to weave lanyards and key fobs is a sub-offshoot of the EDC world. The weavings are both a decorative way to always have some cord with you (with a bit of work, the weaves will unravel) and a practical way to get a grip on your gear.
Near the very top in the paracord weaving world is this fellow: Stormdrane's Blog. You just have to go to his blog site and look at the outstanding craftsmanship he puts into the lanyards and fobs he creates.
As for me, yesterday I made a square sinnet key fob - my very first creation. Paracord is made from Nylon fibers so the finishing act with a many of these weaves is a quick jet of Zippo flame to melt the tag ends. I burned mine a bit too long with a fireplace lighter (what can I say? I haven't EDC'd a lighter since I quit smoking years ago) and blackened the tags...