I like to go lightweight in the wilderness or its periphery. Clothing is one of the critical things to take care of myself so that I can concentrate on hunting. Where and when I hunt, the lows are at least freezing. Last year it was -5 F but this year no less than twenty-something. It's never extreme because it's just October, but cold enough that if I'm not dressed right, I can't keep still or focus. I like wool and wear lots of it. Down is lighter and compacts better but I like the breathability, low cost and durability of wool. I usually have a wool base layer, wool socks, wool trousers, wool sweater, wool shirt/jacket, etc. I do backpacking and have done mountaineering in my youth, so I've had plenty of year-round experience to work my ways out. I've had all the high-tech stuff. I never liked the membrane fabrics much, so I don't buy that high-dollar stuff they advertise anymore.
Optics. Maybe this should be considered a hunting item because it's the primary thing I use. I don't even use a weapon. I let the people with tags do that. I love my Swaro spotter, but for binos, I've been picking up used Nikon HG. I've got several sets of Nikons to share with everybody. Used HG's are an awesome value. Used EL's just aren't discounted that much.
So if the clothing has me comfortable enough that I can focus on glassing, I'm most of the way there. I like to eat and sleep, so for meals it's either freeze-dried (backpacking) or canned (car camping). For freeze-dried, I like the MSR Reactor for boilnig water (and melting snow). It will scorch canned food though and it's hard to clean, so for that I prefer a Trangia. I have a white-gas backpacking stove that's somewhere in-between, and I have a 30,000 BTU Camp Chef for glamping. I've done hunting with more elaborate camp kitchens, fresh eggs, fresh meat, breads, deli meats, pancakes..., but the focus has been so much on hunting that I don't give time to that anymore. Doing that for 10 days or more requires a trailer and I'd rather the 4x4 be unencumbered and camp easier to move.
I've camped/hunted with several kinds of RV's (pop-up, TT, class-C, etc.), but prefer a tent. This year, every night but one was just open-air, but that one there were scattered thundershowers. Usually, it's snow and wind that demands some shelter. I have a small backpacking tent and a big tent (for cots). I like them both, but like the big camp kitchen, the big tent has gone away in deference to a focus on hunting. If I were ever to go by myself or with only my wife and I, I'd like a Springbar and cots but enough of those are too bulky for three or four people that compete for space in the 4x4.
2-meter radios are nice to have when there's more than one person.
As for tools, I take a big Pelican case loaded with about 100 pounds of mechanics tools and recovery gear besides the bags of more frequently accessed items. Under the back seat is a long steel bar, the Hi-lift, a Sven Saw, tomahawk (light hatchet), and besides that, a small shovel. I don't have room for a truck full of tools and gear. My 4x4 is small and light (gotta keep up with those SxS's), and I fill it with people and camping gear. Sometimes I think about a big truck like a unimog or even a deuce and a half to haul a deluxe camp for two to stay the month, but I debate whether that would be better, or a bushplane.