OK, we’re in the bird hunting forum. For me, that’s going to be upland bird hunting as I really don’t hunt waterfowl. As such, when I get out of the pickup I’ll have a shell/bird carrying vest, a couple 16-32Oz squeeze bottles of water for the dog, and whatever pocket knife I happened to grab that day.
I keep a lot of stuff in the door pockets and cubby’s of my pickup though. Victorinox multi-tool, a needle-driver and a good forceps for porkie-quills, etc. a package of Vicril sutures already on a needle, disposable scalpel, gauze, quick-clot, vet-wrap. Couple small tool kits w/replaceable bits, 1/4” and whatever the micro-sized models are. 12’ tape measure, hitch coupler pins, cotter pins, 3M Supper 33+ electrical tape, synthetic gun lube, a spare shotgun plug, several fixed-blade knives of different shapes/sizes. 12 and 20 Ga choke tube wrench w/thread chase, spare dog whistle, badger-hair shaving brush for removing dust and debris from really dirty/dusty optics lenses l, probably other stuff I’m forgetting.