A Tourniquet is a good idea to and a PLB. Also a small guide to trauma first aid because when you're staring at a gaping hole you can struggle to remember anything.
I only bother with stuff to help in a life threatening situation, I just carry the stuff for life threatening situations, anything else can wait till I get home or back to camp. Except for a bottle of saline to blast any crap out of my eye.
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