Here is some basic stuff that will show improvement right off the bat.
1. Hella E code headlights or equiv IPF with 65/85 Xenon H4 bulbs, plug and play.
2. Set of Good Fog lights, I liked my Hella 550's and like my smaller 450's equally.
3. Cell phone in car mount, they tie into the cars sound system and mute the radio on incoming and outgoing calls. I had a startac and replaced it with a new LG GPS setup [don't know how to use it yet] the car mount goes in next week as soon as they get them in stock.
4. Cobra WX75 I think, it's a CB with an all in the mike setup, handy and compact.
For off road:
5. SKID PLATES, gas tank for sure, find one from a 97+ in a bone yard. Rock sliders that go under the rocker panels, cause if you don't have them sure as god made little green apples your going to come down on a rock and dent those rockers.
6. Tow points front and rear, two ways, put 2" receivers on both ends and use shackle inserts OR Tomken front and rear bumpers with built in 2" receivers OR Rustys, Custom4x4 front tow hook kit. Good 20-30,000lb tow strap, NO HOOKS ON IT, loops only.
7. Tires, the stock Good Years are terrible, Dunlop, BF Goodrich, Pirelli, Cooper all make decent AT tires. I run the BFG AT/KO's now, nice tire, good price at BJ's Wholesale. Have run Pirelli Scorpion AT's and Dunlop Rover AT's, all good tires.
A couple of companies make rear bumpers with built in 2" receivers AND shackle mount tabs, kills two birds with one stone, gives you the tabs for mounting D rings for pulling and a 2" receiver for one of those bike carriers.
And the biggie, most important of all, A FACTORY SERVICE MANUAL, you can order one fom the back of your owners manual or at the dealer.
Put together a good tool kit with the appropriate sized wrenches for things you think you can tackle yourself. A 1/2 torque wrench, Auto Zone and other carry them for around $25 bucks, 2ft 1/2 breaker bar, keep under back seat, both about 2ft long as well as a deep socket to fit your lug nuts. You don't use a torque wrench to loosen stuff, only tighten. Personally I heaved my stock lug nuts and spent $25 bucks on solid chromed ones, don't want to have a cap slip off when I need to change a tire.
Reminds me, did the change on both jeeps, anybody want 10 locking lugs