The first thing I would tell you regarding kits is keep them to a minimum, unless you want to be like me and spend ten minutes unloading backpacks, pouches, range bags, and other shite from your car just to fit groceries in the back seat. Your IFAK (Individual First Aid Kit) should stay the same for mall runs, range work, hunting expeditions, ninja raids, or whatever; if you want to keep more than one, that’s up to you, but I find it easiest to keep one in my every day carry and one on my shooting rig (because I don’t want to spend time putting it on the rig).
The two IFAK pouches that I'm using right now (and obviously prefer over others) are the ITS Tactical Fatboy or Tallboy (either one depending on your preferred profile; I attach a second tourniquet to the side and put one inside the pouch) and the HSG M3T Taco. I've also used pouches from North American Rescue, 5.11, Tac-Med Solutions, Safariland, and others, just so you know I've ranged the options before settling on these two. As far as IFAK contents, keep it simple so you're not goatfucked when you're under stress and trying to find stuff. I also keep my IFAK separate from any other aid gear, again so I'm not hunting through dross for it when I need it.
I’ve attached a list of gear that I add, mix, or match for when I might need more than the IFAK. These are only suggestions based on what I keep around, excluding most of the Paramedic level stuff, and can be adjusted based on mission or task. I find it easiest and most cost-effective to buy items separately, rather than pre-stocked kits, so I don’t end up with a bunch of shit I don’t want in my kits, and the shit I do want is the type or brand that I prefer.
As far as home vs. car vs. hunting cabin, it all ends up being the same stuff, so you can, again, just have a bag/kit that you take between those places or build separates, as you see fit.
IFAK
2x tourniquet (CAT Gen 7 or SOFTT-W recommended)
1x hemostatic gauze (We like Quikclot)
1-2x regular medical gauze
1-2x commercial chest seal (HALO or Hyfin are both good choices)
1-2x Olaes or Israeli/emergency bandage
1x NPA (Size 28 french is a pretty average go-to for adult patients) plus lube
1x nitrile gloves
1x trauma shears/cutter
ADVANCED: 2-4x 14 gauge 3.25” catheters for needle decompression of the chest (or ARS*)
EXPANDED TRAUMA AID, i.e. range/car kit for multiple trauma, active shooter, et al
More of everything in the IFAK: think 1 IFAK=1 patient
2x large trauma dressing
Medical tape
Duct tape (flat-packed works best for space conservation)
5-10 sterile 4x4s
1-2x sterile water: for wound irrigation or minor burn dressings
2-4x survival blankets (or HPMK**); can also supplement with hand warmers
Bag-valve mask (preferably compact version for space***)
Boo-boo kit
ADVANCED: cricothyroidotomy kit, finger thoracostomy kit, advanced airway(s), IV supplies
SHORT-TERM EXPEDITION
1-4x IFAK contents, subjective to personnel and duration/resources
2-4x SAM splints
Medical tape
Duct tape
1-2x sterile water
2-4x triangular bandages “cravats”
2-4x elastic wrap/bandage
1x hard eye shield
Bag-valve mask
Boo-boo kit
Medications:
Epipen: for severe allergic reaction/anaphylaxis
Benadryl/diphenhydramine: for allergic reaction
Immodium/loperamide: for chronic diarrhea
Oral glucose
Electrolyte supplement
Zofran/ondansetron: for chronic nausea/vomiting
Aspirin: for suspected acute coronary syndrome
Ibuprofen: for inflammation and analgesia
Tylenol/acetaminophen: for fever and analgesia
Cortisone cream
Antacid
Topical antibiotic, i.e. triple A
Oral prescription antibiotics, broad spectrum, if available
BOO-BOO KIT
Minor wound dressings of various sizes/shapes (Band-aid or whatever brand preferred)
Burn gel(s)
Needlenose forceps/tweezers
Moleskin and molefoam
*https://www.narescue.com/ars-for-needle-decompression-3-25-in
**https://www.narescue.com/military-products/hypothermia-prevention/nar-hypothermia-prevention-and-management-kit-hpmk
***https://www.narescue.com/cyclone-pocket-bvm