Since I own a Jeep that I've built for serious offroading, I keep the following in it:

30'long 3" wide 30,000 pound rated snatch strap
8' long 3" wide 30,000 pound "tree saver" strap
20' heavy duty tow truck chain
receiver hitch-mounted shackle bracket
beefy front tow hooks mounted directly to the frame
a few 3/4" D-rings
a snatch block
a 48" Hi-Lift jack

That's pretty much all my recovery-type gear.

I fried my winch one day and need to buy another one (burnt up the solenoid pack AND the motor), but I should be good until I lay hands on another one.