The post says survival . . . not what I would need to be able to boondock in the style that would make me want to do it more.
I divide survival into two different types -- survival from the wilderness, and bugging out to the wilderness to survive. I will only address the former.
There are two areas I boondock in. At the bare minimum, I want to be able to go for help. In one area it is 1 mile to a farmhouse. In the other it is 6 miles. So I want good waterproof boots and breathable raingear. In case I am injured, it might take a while to get that far so I want my fanny pack (which has a small survival kit in it), GI canteen with cup, stove, and trioxane, along with my Hiker Pro filter and some instant rice. I would also take a tarp and a GI sleeping pad for shelter. I would also take two Glocks -- models 81 and 20, the latter so if I am injured I don't become prey. A small folding saw would round out my ability to have heat and shelter.
If I think I can get out in the truck, I might need my 4' crosscut saw, my bypass loppers (makes clearing a tree from the road easier and faster), leather work gloves, safety glasses, chisel, hatchet, granddaddy's fence stretcher, and the third Glock (entrenching tool). If I think I might try to get the trailer out, I would also add a pole saw to this ensemble.