This is the list I go over before a trip. The place we're headed to and whether or not we're camping modifies the list but it's a good one to look over and decide what you think you'll need...
You might laugh at some of it but just on this last trip (the reason I started compiling a list) I bought valve stems randomly at Autozone the night before we left and sure enough the next night when we were wheeling in I lost a bead and it took out my valve stem. Easy enough fix that kept me from having to use my spare and keep the spare for a true emergency such as a cut sidewall.
· Hi-Lift
· Spare tire, tire plug kit, spare valve stem
· Jerry Can
· Water Can
· Pressure gauge/air down stuff
· Leather gloves/Mechanix gloves/ Latex gloves
· Brake parts cleaner, WD-40, RTV, shop towels
· Duct tape/zip ties
· Fuses & test light, extra wire/connectors
· Maglite w/ extra batteries, head-lamp
· First Aid Kit
· ABC Fire extinguisher
· Engine oil, gear oil, tranny fluid, anti-freeze, brake fluid, oil filter, siphon or pump
· Water proof work boots
· Sockets, extensions, drivers, wrenches, pliers, screwdrivers, c-clamps
· Breaker bar, spindle nut socket, pick set
· U-joints, ball joint/u-joint press, spring center pin, bolts/nuts/washers for suspension
· Small pry bar/chisel, pickle fork for TRE’s
· Loaded axle shafts, lug nuts, spare d-shafts
· Spare locking hub
· Radiator hose repair kit
· Jumper cables
· Spare alternator, fuel pump, belts, fuel filter, splice kit for rubber hoses, extra fuel line
· Extra ratchet straps, rope, bungee cords
· Tree saver (or extra strap) & tow strap with d-rings for hookup
· Axe, shovel, hack saw w/ metal/wood blade, sledge hammer
· Plastic tarp
· Tent, bedding, warm clothes, folding chair
· Lantern & extra propane
· Lighter
· Map, compass, GPS
· Toilet paper/baby wipes, trash bags, hand sanitizer/soap
· Rain suit
· Bug spray/sunscreen, good hat
· Drinking water and food