Here is what I carry at all times, most of it is under or behind the seat, but I also have two storage boxes in the bed at all times for what doesn't fit under the seat.
I am off road a lot, many times by myself (I know, not preferred) so I need to carry extra recovery, survival, and repair gear.
- 4 ton Hydraulic Jack
- 48" hi-lift jack (for trailers, toys, and separating a tire bead)
- Tire patch/plug kit
- 24" Tire Spoon
- Jump starter
- Full Rain Gear
- Hoody
- Beenie
- Gloves
- Recovery Rope
- Winch Extension line
- Tree saver
- Soft shackles x 4
- Snatch Rings x 2
- Binoculars
- Folding Saw
- breakdown 22 caliber rifle
- Coiled air line for on board compressor
- Air fittingings, nozzles, and air line repair parts
- 24" Breaker bar
- Full tool kit - Everything needed to work on the truck or do a repair within reason
- Ratchet Straps x 2
- First Aid kit
- ATF, Brake Fluid, WD40, Brake Cleaner, Coolant, 5 qts oil (just enough to make it out of somewhere if needed)
- Bailing Wire
- 1100 Paracord
- 2 Part Marine Epoxy (5 min set)
- 1/32 aluminum plate about 12" x 8" - This and the epoxy can do a temp repair on an oil pan, trans pan, or gas tank in an emergency
- Duct Tape
- Electrical Tape
- Electrical repair kit and tester
- Fire Extinguisher
- 2 Flares
- Fuses, assorted bolts and nuts, screws
- Water, at least 1/2 gallon at all times
- Life Straw
- Tarp
- 55 gallon trash bags x 2