At the risk of sounding like some sort demented doomsday prepper I've started to get into the idea of EDC (every day carry). Useful "stuff" people have on their person as they go about their lives (within the laws of their land of course). For years I've had a small multi-tool as a key ring. It used to be a leatherman micro but the scissor joint became loose on that (it got lots of use) so now have a Gerber one instead. The things on it I seem to use the most are the package opening blade and the tweezers! My kids run around barefoot a lot so splinters happen often. I don't go clubbing or get on planes or anything so it's not an issue to carry afaik. Did jury service a few months back so left it at home on those days. I also have one of these on one of my keys but honestly only use to to tell the back door key from the front key in the dark! I've just added a tiny torch to my keys too. One of these. Really bright for the size. Something that I've also started doing recently is having a water bottle to hand so I know I'm getting enough hydration. Recently ordered something a bit more robust than your average plastic job. Lastly I wear a G-shock GBA 800 step counter watch with an after-market (more comfortable!) NATO strap. Was wearing a fitbit step counter anyway so decided to combine that functionality with a decent watch. If UK laws allowed I'd probably carry a pocket folding knife of some sort but realistically I wouldn't be adding any real additional functionality I don't already have covered in my existing kit. Beside feeling like a badass. When we go camping I bring a Morakniv companion but can't carry that habitually so it ain't EDC.