Here's a great list of what to bring and what to be equipped with depending on the type of difficulty of your trip.
http://www.4x4review.com/tech/equipping-rig.htm

This is what OSJ says you should have lol

MUST HAVES: These are items that you ARE required to have to go on a trail.

* All Jeeps not having a steel roof must have at least a factory roll cage
* All Jeeps must have working seat belts for all occupants
* A Jack Capable of lifting your Jeep (Hi-Lift Recommended)
* A spare tire within 10% of your rigs tire size and securely attached to your Jeep
* Front & Rear tow points (a hitch Ball is not a secure tow point for vehicle recovery)
* Tow Strap (with NO metal hooks)
* Properly secured Battery (Bungee cords & ratchet straps are unacceptable)
* A fire extinguisher (rated for A, B, and C class fires)
* A Tire Pressure Gage (0-50 psi) Makes it easier when airing down
* A CB Radio (mounted or Hand Held)
* A First Aid Kit
* All Jeeps must be registered and insured.

Recommended Items: These are items NOT required but may make life easier.

* Tool Kit
* Spare Parts (hubs, ignition Axles, assorted hardware)
* Trash bags (pack out more than what you pack in)
* Shovel
* Axe or Saw
* Air pump or Compressor (you'll need to refill you tires at the end of the trail)
* Tire Plug Kit
* Extra Fluids (oil, gas, water, etc..)
* Winch

What not to bring off-roading.....................Mark

extra ciggerattes every time i go out esp if i get stuck im out of ciggs