Recovery gear - tow strap, D ring (receiver hitch), heavy gloves, winch remote.
Cheap hand tools - ratchet, sockets, wrenches, etc.
Bottle jack, 4 way lug wrench, heavy duty portable air compressor.
Small cooler with water and food. Most of the tools and recovery gear stays in my Jeep all the time in case I break down or need to help someone else.