You need a chair to sit in and drink that beer. Depending on the cooking you do, you might need a grill or stove, and pans and such to cook it. I don't know too many people that can cook a decent meal by just using the campfire. But if you can do it...
The best darn thing for camping at night besides a good woman, is a P7 modded 3 D cell maglight. A stock maglight is so lame.
Stick three low self discharge (LSD) NiMh batteries in er. With the head on, it is like a searchlight. With the head off, it is like a Coleman Naptha lamp.
Hang it up from a tree and your campsite is well illuminated.
No fuel to mess with. You get about 8 hours of light out of it. The emitter never wears out and the thing doubles as excellent club if you ever need to bludgeon anyone.
For another 20 bucks you can get an aspheric lense. Then, you can light up the clouds or see every fish below you as you canoe at night
Check out the candlepower forum on the net.
If you already camp you know that end (beer, women, food, TP, e-tool for digging cat holes, etc).
Firearms, especially in the hands of untrained, people/drunks (or even trained drunks) are a disaster waiting to happen (IMO). (I have never need one in more than 40 years camping or 25 years wheeling; I am a firearm enthusiast).
In a Jeep bring tools, spare parts, fluids, hoses, clamps, rescue stuff like snatch strap & shackles (basically standard four wheeling gear).
Don't forget a practical first aid kit; and formal first responder training in how to use it...
There are horrendously long overly detailed lists out there on the web and here at JF but the best list is the one that you make yourself after determining what you need and what you need to leave behind (IMO), it depends on your camping/wheeling level, the trip, and the terrain you are going into.
...a well prepped, well driven, vehicle should do well in any terrain, including the highway.
Carburetors became obsolete during the last century... do what ever it takes to get fuel injection...It makes bigger grins off road.
Take everything you own, put it in the jeep and go camping, make a list of all the items. When you get back, take out the list and x out evrything you didn't use and add anything you needed but didn't have!