Pliers and Duct Tape
As we travel to hunting areas in our modern conveyances, sometimes things conspire to work against us no matter how we hurry to our destination.
Most of us, myself included, don't carry spare fan belts and radiator hoses in our vehicles. I have found that a simple tool box with a flathead and phillips head screwdriver, cresent wrench, and a roll of duct tape can help to repair what is broken and get us down the road to a location where the vehicle can be properly repaired.
More than once I have had a radiator hose "blow out" on me. The crescent wrench and screwdrivers are for looking prepared while the duct tape is for doing the actual repairing. The duct tape can be applied to the malfunctioning hose, wrapped around it, to cover the leak long enough to get you to a place of civilization where a suitable replacement can be found.
In my truck I carry spare water, for drinking and filling the radiator, various hand tools for simple repairs, and a small air compressor to fill flat tires. This may not be a hunting tip exclusively but I do think it behooves us to make a simple kit to keep in our hunting vehicle for those times when such misfortune befalls us. When we are hunting we are away from the conveniences of modern society.
It falls upon us to be prepared for not only what we are doing or plan to do but what may happen. That is why I suggest that anyone who goes off the paved road carry a simple tool box. I realize that many of us will already have these things, and more, in our hunting vehicles but some of us may not.