For remote travel I carry an extensive tool kit sockets, spanners, screw drivers, welding glass to tape on cardboard to make a welding mask and rods for arc welding with the use of dual batteries ( Trialmaster ) jumper leads and an additional short lead, ( some practice required ), soldering iron and solder with wire, fuses insulation tape Lindstrom diags, hack saw with multiple blades, clamps steel spade with tubular steel handle so it can be cut up and used for fabrication as well as used as a shovel, hammer OBD tool, fuel hose, belts, radiator hose oil, brake fluid nuts and bolts, liquid steel, stainless cable ties, normal cable ties, fuel filter oil filter air cleaner, multimeter, cordless drill, torque wrench etc.
And all up adding surprisingly little weight, as most things having multiple uses, and as with many other similar forum members almost always used to repair other peoples vehicles.