Somewhere in my center console ... I have a couple of flashlights, lighters, leatherman, sunglasses in cases, a 10mm socket or two or three, charging cords for android and apple, stash of Zyn, 12v rapid charger with 2x USB ports, change holder.
Under the seat in the back I have a snatch strap, a D ring hitch for recovery, small fire ext, trauma first aid kit.
Aside from that I throw things in the back for the conditions. If I'm going over the passes in late fall/winter I'll throw in a couple small shovels and extra coats, jump pack, socket set, zippo hand warmers and fluid etc.