For the 4x4 group.... we carry
let me underscore GROUP never wheel alone
1) Flashlights and batteries
2) a tow strap
3) a snatch strap (they are NOT interchangeable)
4) hi-lift jack, and accessories like jacking pads, gloves, etc
5) basic handtools, metric socket/wrench set from Sears is pretty good (Craftsman), screwdrivers, duct tape, zip ties, channel locks, vise grips, wire cutters/strippers, electrical tape
6) chains - both for towing and for tires
7) winch and its gear (tree saver, snatch blocks, large D rings) - I have a 9500 lb winch with a nylon line - so I don't carry a cable blanket
8) blanket and tarp to lay on
9) fix-a-flat
10) lug wrench (oh lord how many times have people gotten out and been unable to remove their wheels because they have the wrong wrench?)
11) lots of lights
12) air compressor(s)
13) shovels - small latrine shovel, long handle shovel, snow shovel
14) axe
15) saw (sometimes even a chainsaw)
16) extra fuel
17) HAM radio
18) RACE radio (specific to SAR)
19) GMRS radio and CB radio
20) work gloves, insulated, water proof - several pairs because the get wet
21) latex (or similar) gloves
22) first aid kit (car based)
23) fire extinguisher
24) all the above "recommended" from SAR
25) WATER - LOTS of water (lots = 5 gallons or more)
26) I never go out with a breaking (or likely to break) rig