ready welder or equivalent( for me its 2 batteries and a set of jumper cables, jumper leads and some stick), I carry output shaft for t case, 1 spare triple flange, u joints, enough grease to do 2 knuckles and a couple u joints,mostly every seal possible, tools to fix anything: ive been trying to use only my tool bag at the house for all repairs on truck, that way, your ready for all situations, BFH(pounding out sheet metal), a pair of shears, extra wiring, various gauge and lengths. all fluids( complete oil change including filter, 1 gallon of antifreeze, brake fluid, multi meter, various sensors, tps, timing chain set, feeler gauges for valve adjustment, oil spill kit. spare knuckle. water pump, and quite a bit I cant think of right now
