I drive a 4 dr Dodge Dakota Pickup with a bed cap. The bed is carpeted.

In the glove box is a fanny pack mini-bob.
In the center armrest compartment is a tool roll, a jar candle, 4 disposable rain ponchos, matches, and several mult-tools and SAK.
Under the front seat is a SAM splint kit and nylon windbreaker.
Behind the rear seat is are two pair of leather gloves and two ball caps.
Under the rear seat is a commerical fanny pack 72-hr kit.
Additionally under the rear seat is a folding shovel and an umbrella.
In the carpeted bed of the truck is a rubber maid tub with a small duffle with a light jacket, bungees, screwdrivers, flares, reflector triangle. In the same tub is a blanket.

I use bungees to keep the rubbermaid tub from sliding around in the bed of the truck.