I haven't read through this tread entirely but I'll add a couple of things.

Ditch the rubber bands. As others have mentioned they're way too short-lived. Get some old innertubes from bikes, cut those up and there you have it, "Ranger Bands." They don't suffer from the heat and exposure problems plus they burn really good so you've got a great tinder.

Big safety pins are great. They can be used for all sorts of things, including if needed closing a gaping wound or keeping the tongue out of an unconcious patients throat. (Yes, they'll hate you for it later but at least they'll have a later)

That's all I can think of but I'll look through my stuff for some more. Great thread.

Charlie