The stuff I carry, either in my pockets or in my bag...
A 6ft length of paracord in a key fob type knot,
A good quality LED torch, currently a Lenser L7 and very happy with it,
Wax-tipped matches,
A Boafeng dual band transceiver, picks up broadcast radio as well as transmitting on VHF and UHF. I have it set to a variety of maritime and other frequencies,
Notepad & pencil,
AA Powered phone charger,
Cable ties,
Small micro fibre towel,
Shemagh scarf,
4" Penknife,
ResQme window breaker.
Plus a few other bits I won't admit to
I have water bottles stashed all over the place, which I use all the time and constantly replace.
The car has a small first aid kit and a small set of tools. Stored elsewhere there is a really good medical kit and four locations with proper tools etc.
By law all my registered firearms and ammo have to be at one address, which is a shame. But there is an ample supply of both.