Just out of curiosity what do you all carry in your first-aid kit. Anything you absolutely couldn't live without.

For my money, it's 3 things:

Aspirin, Duct Tape, and moleskin fabric for blisters.

being a person (like tim taylor) that can hurt their self geting dressed i always carry one

I carry a kit in my truck that is pretty much what I carried as a medic in the Army 35+ years ago. It is probably more extensive than what most people need. It is very good advice for every one to take a first aid course and CPR training.
As a retired ER nurse, I would caution against using burn creams. They are safe only on very minor burns, minimal first degree burns no more than a dime or nickel size. Any bigger and the creams actually can extend the damage of the burn. I have seen many people who cause more damage with burn cream than if they had done nothing. If you doubt that, go ask any ER nurse what they think about burn creams. About the only one that is safe is Silvadene but that is by prescription only and cannot be used by people allergic to Sulfa drugs.

I just want to add 2 things to my last comment. First, I recommend everyone carry an elastic bandage (Ace, 2-inch, Velcro). These come packed with excellent instructions for treating all the various types of sprains. I once had to walk a good long way on a sprained ankle and if one of the guys hadn't had an Ace bandage and known how to use it, the options would have been to carry me or leave me. Secondly, the first thing you should see when you open your first aid kit is an antiseptic wipe. NEVER touch a patient or your own supplies until you have disinfected your hands.

As far as Ace bandages, I would recommend at least 2 in your pack. A 2" for hands & wrists, and a 4" for ankles and knees. For an ankle, you would need to use a figure 8 pattern wrap with a 4" minimum, unless it is for a child. When wrapping ankles, a 2" is too narrow and can move or slip, sometimes creating a tourniquet effect. If the injured party, who already is in pain, doesn't notice this, there can be extensive damage to the affected extremity. Improperly placed, an Ace wrap can do more damage than it would do therapeutically. Then it may take longer to heal. While working in ER, I have seen too many people who suffered more damage from an improperly used or placed Ace wrap than from the injury for which was used to treat.
I would also recommend every outdoorsman to take a Red Cross First Aid course, minimum, A basic EMT course is even better, and an AHA CPR course should go without saying. With these under your belt you will be far more equipped for life's little mishaps when out in the wilds.
There seems to be nothing worse that any man could go through than to watch someone you care about dying and not being able to do anything about it either through lack of training or other circumstances beyond your control. The more prepared you are, the less likely you will experience that grief.

Ace wraps are great if you have some compressed gauze you can do away with all other pressure dressings and slings thus reducing weight. An ace wrap wrapped over some gauze or clothe tightly will stop many nasty wounds from bleeding out. Check out the emergency trauma dressing aka the israeli. it has gauze connected to an ace wrap and can be used as a tourniquet, pressure dressing or a sling. I have used them to many times to count. I would not do away withthe aspirin if you are hunting with older hunters it could help in the event of a heart attack or stroke. A small package of quickclot will also be nice if you have real gusher going on it stops the bleeding like no other.

AS a Ex Ski Patrolman I'm a tad anal on first aid I make sure that I carry a well stocked kit in case of a a health crisis, plus There is one in all our cars, just in case we happen to run in to a problem.

Carry one, no matter where you go, I do and having one handy has benefits. I take a general first aid kit everywhere. Band aids, and various other bandages, over the counter meds, (Motrin, Benadryl, etc…). If I am fishing I make sure I have a hook removal kit, and or at least know how to make one. While hunting, I carry material for splitting. I always have a compass, matches, and knife and other survival gear, but knowing how to use it all makes the difference. So read up on what you need, and know how to use what you have before you get into a situation when you need your first aid and/or survival kits.

I have a fanny pack that I got from wal-mart. It's a outdoor gear one that holds two water bottles. I take it on all fishing trips and all hikes no matter how long or how short. In the fanny pack I have a first aid kit I bought from Bass pro shops for six dollars. It's small and doesn't way a lot and it was cheap. I see no reason to through it in there.

My wife gives me a hard time about the fanny pack, but it's a outdoors one, not a nerdy one.

I have several first-aid kits but what I carry varies greatly depending on where I'll be. When hunting or fishing close to a vehicle or phone I often carry nothing. Whatever I need can be had close at hand. When "a couple hours" out I'll have aspirin primarily in case anyone has ANY symptoms of a heart attack and a couple of bandages and/or tape. When hitting the untamed wilderness everything changes. I am then first responder AND second responder. I then carry aspirin, ibuprofin, Neosporin, silverdene burn ointment, Diprolene or cortisone cream for poison ivy/oak, etc. and for blisters, moleskin, bandages, tape, and a couple of ace bandages. I will also have a needle & thread or sutures. If fishing I'll have wire-cutters for cutting fish hooks.

The amount of that gear that goes with me daily depends on how far I'll be from camp. If I can get back to camp before I need it I don't carry it on me.

I carry a few bandaids, OR powder for stopping hemmorage, some of the single dose aleive because it lasts 12 hours, some chewable pepto, and a roll of athletic tape. This is much stronger than paper tape and in a pinch can be twisted into a pretty stout cord to tie stuff up like for a shelter. It can be used for holding splints and if you know what you are doing support sprains. Only weighs a few ounces but keeps me on the stand. Easier to kill something that way than at the camp.