I do 4-5 trips per year and really get into some nasty out of the way stuff.
Cell phone ain't much good.
2 big Labs.
Plenty of food and treats. Dog dishes.
A good jack and shovel will get you off a rock or high center.
You got to turn around if conditions get worse then the jack and shovel method.
12 gallons water and a cooler of frozen milk jugs.
Couple 3 cases of beer.:cheers:
Ham, sausage, steak, burger, eggs, beacon, milk etc in another cooler. Some of the stuff starts out frozen and with ice.
Couple boxes Total cereal.
Couple boxes fudge dipped granola.
Bread, butter, cooking oil, ketchup, mustard, pickles, assortment of canned veggies, chips, snickers, mm peanuts, apples.
[my cart tends to get kinda full.
Cooking pans and eating stuff.
A good set of tool is very important. In case of a flat there's a better then good chance your factory lug wrench will not do the job. Sturdy socket and a small sledge will save you a long walk out. [trust me]
Not a bad idea to have a spare, spare.Gallon antifreeze, couple quarts engine oil. Quart of diesel or charcoal starter for campfire starting.
First aid with plenty of tape like adhiesive and electrical. And medications. Rope. Matches and waterproof matches. Lots of paper towels, toilet paper to.
Guns and ammo, licenses, hunting knives and sharpener. Pack frame and day pack. Plastic bags, game bags and garbage bags.
One set of keys always in the pocket, a set for use and extra truck door key in the topper.
Clothes and boots for warm, cold and wet weather. Orange and camo, upland vest and jacket.
Most of my trips are combined bird and big game.
Maps! plenty of maps.
That's all I can think of offhand. All but the perishables stay in the topper for the next trip. Saves a ton of time.