I carry two kits in Kifaru Ultralight Pullouts, one that fits inside the other. The smaller is my "day kit" and contains:
120dB whistle
3x lithium AAA batteries for my headlamp (it takes 2, but people I hunt with use headlamps that take 3)
2x Steristrip wound closures
2x Sterile Two's (gauze pads)
Foil mylar rescue blanket
3x alcohol prep wipes
3x BZK antiseptic wipes
10 bandaids
2x nitrile gloves
Micro Starflash signal mirror (with sight)
Sharpie with electrical tape on it
Small baggie of mixed OTC meds: aspirin, benadryl, ibuprofen, antacid, simethicone, caffeine
1x prescription anti-nasea, clearly marked for me
4x zip ties
1 cut-down roll of foam heel tape (enough for about 4 tapings - I blister easily)
All of these items are meant to be so light there's zero excuse not to bring them. (The whole kit is 5.5oz, not that I care - I'm an ounce-fiend but there are some things you just don't negotiate.) Note that I do NOT carry all the "recommended" stuff on prepper lists like "three ways to make fire", compass, or extra knives. When I hunt I'm never without at LEAST two blades, typically at least a belt knife and Gerber Dime EDC in my pocket, plus often my field dressing kit. And as for a compass, my day kit is for times I always know where I am, even without a GPS. They're areas I know, that I've almost always been to before, and I don't get lost easily. Besides, as much as we'd love to believe we can "get into the wilderness", in Colorado you need some planning to get somewhere more than a couple miles from a road or private land, and I wouldn't consider those day trips.
In a larger pullout I can stuff the above into, I carry a few extra items when I know I'm going "farther back", "overnight", or "with people I may need to support" including:
CAT tourniquet
2x chemlight sticks (beats spare batteries any day)
Extra foil mylar blanket
Disposable rain poncho
Leg splint/wrap
Compass
Small amount of waxed tinder, a lighter, and a book of matches
Quick Clot
Water purification tablets (just a few, not the whole bottle)
2x Vicodin I never used from a past operation because I don't take that s*** longer than I have to, but if I break my ankle...
More OTC meds in general from the list above
Two more pairs of nitrile gloves
50' of waxed #36 bank line (half the weight of paracord, 320lbs instead of 550 but that's usually still plenty)
2x safety pins
One more set of AAA batteries
Four more "Sterile 2's", and a handful of extra band-aids, steri-strips, BZK wipes, etc.
In my truck I have a full first aid kit with more of the above, an extra tourniquet, a pulse oximeter, a small can of O2, and for whatever reason I got it in my head to add a Hyvent chest seal for that day I hope never happens and there's an accident in camp and I'm dealing with a sucking chest wound.
My wife thinks I'm crazy, and she knows me better than most...