Re: First Aid Kit?!.....
It's more important to know what to use and how to use it, than what you carry, and I think a decent first aid class is more important that the equipment you carry.
The snake bite thing seems to change more frequently than others.
I think with those little kits, the cutting could make things worse. I'm sure with training they're more valuable.
A simple cravat will do for most cases, and is very small and easy to carry. It can be a bandage, or a sling, or even a tourniquet, or stabilize (with a stick) a broken arm, etc
After that, it's more non emergency, but comfort
In the car, I guess the argument can be made, you carry it for someone else to use
just my .01