The Z71 in signature is a regular cab … let's see
Jumper cables, air compressor, plug kit, soft side tool bag with lots of wrenches, pliers, screw drivers etc, nylon recovery strap, short chain, factory jack, 12 ton bottle jack, (oak pad for that), clamps, bungee cords, duct tape, electric tape, shop towels, bottled water etc … this stuff is behind or under seats … room to spare as new truck ages …
The new ones have dual console, dual glovebox, and dual door pockets so lots of multi tools, flashlights, chargers, bug repellent, sunscreen, sunglasses, emergency phone, all pertinent paperwork …
In the bed I keep a big chain locked with matching lock attached … use it for locking expensive coolers/items, clump weight for plastic recycling or lumber, and yet another recovery item …