Glad you're okay. Most of us have been there, so no worries.
+1 on carrying a FAK if you've got kids!
When I was living in Asia I was sitting at my desk at work and I was using a box cutter to cut open a plastic bottle and the blade tip snapped off and got stuck in my hand. When I pulled it out blood squirted out about 4-6" across my desk and the guy sitting next to me just stared in horror. I applied pressure, apologized and got to the bathroom to take care of it. Fortunately I keep a FAK and trauma kit in my desk, car, home, on my person, etc.
As far as minimums, my experience is from a military standpoint, as a mountain guide and SAR, and as an EMT. I think the very least you need for most traumas include (use more or less depending on situation, weight and space):
-Roller gauze (preferably 4-6"): Kerlix is best, but it's bulky, so I prefer H&H PriMed gauze, which is the same size roll but vacuum packed to save a ton of space (you can fit 2 PriMeds in the same space as 1 Kerlix). Kling gauze is decent and readily available at Wallyworld, most drug stores, etc, but not nearly as fluffy and absorbent. Used for covering wounds, some compression, wound packing, etc.
-Compression Bandage ("Ace bandage") (preferably 4-6"): I prefer the kinds with velcro on the ends for a closure, as there's no crappy clips to lose or break. I've replaced most of my compression bandages with SWAT-T's because they work as compression bandages and also make excellent tourniquets. The only draw back is that they do not absorb fluids the way a regular compression bandage does and they don't breathe so they're hot and sweaty for sprains and strains. Use compression bandages to cover gauze, provide compression for sprains and strains, as a pressure dressings, improvised snow goggles, etc.
-Trauma Pad (4x6" or 5x9"): Nothing works better for absorbing copious amounts of fluids.
-4X4 Gauze Pads (Topper Sponges may be the only Johnson and Johnson product I like): can be cut down if you need to. Used for cleaning wounds, covering wounds, etc. If you're really concerned about weight and space you can cut patches from your roller gauze, but then the rest of the roller gauze is no longer sterile.
-Triangle Bandage or Large Bandana: used for slings, compression, wound packing, to cover eye wounds, making "doughnuts" to pad impaled objects, etc. Bandana's should be a part of your survival kit anyways, so you could skip this for your trauma kit.
-Large Safety Pins: Use to improvise slings with a long sleeve, pick splinters, secure bandaging, fish hooks, sewing leather or canvas, and also to secure airways (by pinning the tongue to the lower lip. Ugly, but it works).
-1 Quart Ziploc freezer bag or Alokasak: for holding the kit and also as an ice pack if it's snowy/cold, pressure irrigator by filling with sterile water and/or diluted iodine solution and poking a hole in the bag and squeezing, for packing larger wounds, saving severed body parts, for treating sucking chest wounds, etc.
-Duct Tape: for securing bandaging, closing wounds (don't do this in the field as you are inviting infection), securing avulsed skin, and a billion other uses. Gorilla Brand is still the best that I'm aware of.
-Meds: Epi-Pen if you have a prescription, Benadryl for anaphylaxis, aspirin for pain/heart, tylenol for pain/fevers, ibuprofen for pain/inflamation, immodium AD because diarrhea is your body trying to get rid of something unpleasant at home but is potentially dangerous in the wild,
-Assorted Bandages: for boo-boos. I like the 3M Nexcare ones.
-Neosporin + Pain Reliever: Pain relief is important for kids and burns. Wounds heal twice as fast and it helps to keep the wound cleaner. Do not use in deep wounds as it can be toxic.
If you're nice and help others:
-Nitrile Gloves: protection from infectious diseases, improvised CPR shield, wound packing, treating sucking chest wounds, etc.
-CPR Mask if you have room or CPR Shield
If you go into harms way, add:
-Tourniquet: the above mentioned SWAT-T or H&H TK-4 if space is at a premium or CAT or SOFT-T
-Hemostatic agent: preferably one contained in gauze, instead of loose powder
-Bolin Chest Seal or petrolatum dressing
-Nasopharyngeal Airway (~28 French) and packet of surgical lubricant
-3" 14 Gauge Catheter, if you've been formally and adequately trained in it's use
If you're going for an ultra-minimalist kit I wound get:
-6" Tactical Medical Solutions Olaes Bandage or H&H H-Bandage
-Nitrile Gloves
I'm sure I've forgotten a thing or two, but this should get it done.
