I actually have some experience with this!
I travel a lot and always have an IFAK and a somewhat extensive "boo boo" kit.
The IFAK covers serious trauma, car crashes, GSWs, whatever. Haven't had to use this thank fuck. Standard stuff though, take your Stop The Bleed. I carry a tourniquet (I like snake staff systems), compressed gauze, pressure dressing, chest seals, trauma scissors, gloves. You can safely reduce this to the tourniquet and the gauze for 90% of use cases though.
The boo boo kit contains more comfort items, stuff to turn a moderately bad day into a mild inconvenience. It has a bunch of stuff but by FAR the most used items are these in order of frequency:
Ibuprofen - carry many doses
Small bandages - 3M Nexcare are the good ones
Moleskin - helps with shoe blisters, friends use it a lot
Deviant ollam folding scissors - for cutting moleskin, hangnails, whatever. TSA doesn't care about them.
Pseudoephedrine - the behind the counter stuff, NOT phenylephrine from the aisles. This is the good stuff, helps with allergies, mild colds etc.


