I'm a big believer in having life saving products like Celox with me at all times. It's actually come in handy twice as it not only works well as a wound treatment but it can also fix a radiator!
I've been looking everywhere trying to find Celox cheap, the best deal I've found is
http://www.fulcrumgear.com/shop/celox-z-fold-gauze-5/, no matter what though it's not the cheapest thing but it will save your life! Please let me know if you find it cheaper!!!!
What I've also found handy to carry is a multi tool, instant ice and heat packs, hand warmers and something to disinfect a wound! Please let me know if anyone has any other ideas!
Have a great day and stay safe!