Being real? You aren't asking for a first aid kit. You're looking for a minor injury kit, and the difference does matter..

Get a bandaid/plaster assorted sizes box, some Neosporin, and some antihistamines.

Seriously. If you're only looking to carry things that will be useful the most, that's the list. Day to day, most injuries are small scrapes, papercut sized lacerations, and bug bites the kind of stuff you throw a bandied on with some Neosporin, and get on with your day. Or, in the case of a bee sting when you aren't allergic, pop a pill so it itches and hurts a little less.

Nothing you listed is an emergency. It's all minor shit that you don't even need training to handle, though getting enough training to be able to tell that would be a very good idea.

That's the real thing to carry, btw. Training. Doesn't matter what gear you have if you don't know what to do, and of greater importance, not to do. So, kudos on your employer and yourself for pursuing training!

You could maybe add a bottle of spray saline wound cleanser, I guess. That's going to be useful, but it's bigger than pocket sized, so be aware of that factor.

Fwiw, the whole "sas larp" thing? YouTube is full of idiots, but carrying bleed stopping gear isn't larping, it's behind ready to save a life. Emergency services are going to be slower than a tourniquet, period. And not every wound responds to pressure. You get a severed femoral artery, that sucker can pull back far enough that you aren't getting it controlled without a tourniquet, period. Might not even with one.

First aid isn't about tending boo-boos. It's about stabilizing someone long enough for pros to get there and save them. You don't carry that kind of gear because you think you'll use it every year. You carry it hoping you never have to, but can't stand the thought of it not being there if it is needed. That isn't larping. That's preparedness.

I think you’ll have a better idea once you finish the first aid class.

The key is to get to medical care. For a car, a pile of gauze/paper towel, some alcohol wipes, bandages, fire extinguisher, gloves. For home - paracetamol and ibuprofen or aspirin (kids can’t take aspirin; drunks can’t take paracetamol), antacids, bandages, gauze, hydrogen peroxide or mid % alcohol, a wrap. Hiking is the hard one.

This is a giant rabbit hole you could spend your life going down. It depends on what you intend to be able to handle.

You could argue that the most important things to have are items that will prevent immediate death from blood loss or airway blockage. That's really the only thing a first aid kit is meant for.

If you want to expand it into a more general emergency kit, you can start considering things like blankets, seatbelt cutters, fire extinguishers (all things I keep in my car). You should always have gloves, both nitrile and work gloves to protect you from fluids, temperatures and sharp items.

In my opinion, a genuine first aid kit is only for stopping immediate death, so the gloves, various gauze and bandages, a tourniquet and that's about it. You need to be able to keep the blood in the body until help arrives, and maybe do CPR without getting infected by something. There isn't much else you can do to keep someone alive in the short term.

Anything else is just extra, things like disinfectants or tweezers are great, but if you need them, nobody's in real danger so it's not a major issue if you don't have them. It's far more useful to be careful so you don't get into trouble in the first place, especially in the wilderness.

Day-to-day stuff really isn't the point of a first aid kit.

Yeah, it might be nice to have some band-aids, pain pills, chapstick, and pepto-bismol tablets in there ... but a first aid kit's real purpose is to go unused for years on end until it's finally needed in a serious emergency, where it can potentially save someone's life. You don't want to come across someone with a major injury, crack open your first aid kit, and find that you only have band-aids to work with.

For me, the essential base components of a first aid kit would be:

• Sterile gauze/wound dressing that can be applied directly to a wound, or packed into one.

• Some kind of wrap that can be wrapped around a body part to hold the dressing in place. (Can also be used in making slings and splints or even improvised tourniquets.)

• Medical grade tape.

• Surgical/EMT style scissors (for removing clothing without making injuries worse; can also be used to cut the gauze/wrapping to desired size).

• A bit of string (like paracord or just a shoelace or two) -- useful for holding things in place, making improvised slings/stints/tourniquets/stretchers, and can be useful for many other things, and it takes up hardly any space.

• Disinfectant of some kind. (Personally, I'm a big fan of 'wound dust' used in veterinary medicine for injuries on livestock. It's easy to apply, painless, does a great job of preventing infections, and it can help stop bleeding. But any kind of disinfectant would work -- just something to help prevent infections in open wounds.)

• Medical gloves (to protect yourself from infection when working on someone else; to reduce the chance of infecting the injured person with your dirty hands; they can also be used as improvised supplies for certain other niche uses).

Those are the essential basics, to which you could add some more 'everyday' items and whatever else you think you might need and have space for.

Oh, and of course add any items that might apply to your own special medical needs. For example, if you're diabetic, you might want to include an emergency dose of insulin and/or a high-sugar snack. Or if you have serious allergies, you might want to include an epi-pen. Or if you and your friends like to engage in recreational substances, maybe some narcan.

I realize this isn't what you're asking for, but I thought it might still be useful. I've been carrying pre-built kits made by Adventure Medical Kits for around 30 years now. I particularly like their "Ultralight" series, but all of their kits seem to be practical and well thought out. They have specialized kits for just about every situation, but their general purpose kits do a good job of covering all the things you are really likely to need without wasting space and weight on things an average person is unlikely to need.

I carry an Ultralight .3 in my pocket or pack most of the time. I have an Ultralight .7 in my bike bag. I have one of their larger kits (I don't remember which) in both my cars. And I keep an Ultralight Pro in my kitchen, in case I need to grab one in a hurry.

I add small amounts of my daily medications to each kit, just in case. They see enough use that I end up buying new ones every few years.

Dressings and bandages, bandaids, a tourniquet (and learn how to properly use it), medical tape, coban wrap, ice packs you can activate, trauma shears (they’re handy for lots of stuff), and maybe some Tylenol-ish stuff for when friends or family might need it.

I’m a retired ff/paramedic, so mine might be a little different, but those items should get just about any minor injuries taken care of initially.

My personal philosophy is to start with life threatening wounds and work down from there: Tourniquet, emergency bandage, hemostatic dressing ...

Most will just call 112

Lekker bezig pik

No point asking random internet strangers when you don't even say where you are from.

Talk to that trading org about what they recommend. Or talk to your local ambulance station. What is recommended for me as an Australian would be different then what maybe ideal in your location.