Car carry:

For winter add-
Chains
Waterproof ground sheet for applying said chains.
Blaze orange stocking cap and rubber coated gloves

Always have-
shovel, axe and bucket to meet Forest Service laws.
wool blanket and poncho
flashlight and first aid kit
tire patch kit
misc tools and fasteners
knife and fire starters
cell charger
tow webbing
etc.

Have to give away -
Cheap flashlight
Harbor Freight packing blanket (improvised stretcher or insulation)
wool socks (buy a six pack online for cheap for the homeless or accident victims).
Easy open can of food.