- Three feet of rubber tubing.
- A blood coagulator sponge/powder (like celox)
- Electrolyte drink mix powder (like gatorade) for hypoglycemia & hyponatremia
- Sun screen/Insect repellent
- Syringe w/ plastic tip for irrigating wounds (wash out debris)
- Epi-pen (if you can get one)
- Peppy pills (caffeine or similar like vivarin)

I have rubber tubing as a substitute for a tourniquet. They use a similar device when taking blood. It flexes and thus does not completely occlude blood flow (the danger of tourniquets) but the partial constriction reduces blood loss.

Flexible rubber tubing and peppy pills are Cody Lundin tricks for more than just first aid applications. You can also use tubing for: building a sling-shot, as a straw to drink water from small puddle, siphon, water distilling, etc.