i would always bring a shit load of stuff. But it can get out of control and very heavy.
I'm just going to bring the basics... recovery gear (20' strap - tree saver - snatch block - heavy gloves), wrenches, set of pliers, metric and sae sockets, 3/8" and 1/2" ratchets, 1/2" breaker bar, extensions, spare parts (unit bearing, ball joints, axle shafts, ujoint, pitman arm), first aid kit, tire plug kit, duct tape
oh and WATER and my lunch snacks.
just that stuff alone is HEAVY
*I've got that large olive drab army tool bag too. Works great! Also just got a bunch of mastercraft bags for organizing my tools better.