The tools you bring along depends upon where you want to travel and where you want to camp.
If you want to be ready for on-sight repairs along freeways, highways, two-laners, gravel/dirt roads, and be ready for on-sight repairs in resort campgrounds, public campgrounds, and out in the middle of nowhere campsites ... in other words be ready for on-site repairs everywhere and anywhere ... then you need to carry along the same tools you would have at home for repairing your RV.
We carrry it all, including such things as: complete assortment of metric and standard tools of all sorts, tree limb saw, remote inspection scope, full size shovel, 20 inch extension hydraulic jack with lots of boards, spare engine serpentine belt, spare engine and generator fluids, roll of Eternabond tape, chaulking-gun and chaulking, hose clamps, tire puncture repair kit, air compressor, full size mounted spare tire, roof access ladder (built-in), hammer, crowbar, various kinds of tape, spare refrigerator and hot water heater igniters, spare refrigerator control board, hose clamps, spare shower head, and last but maybe most important of all ... a whole drawer in the coach area devoted to being a "junk drawer" that contains all kinds of miscellaneous items to help make many little repairs possible.
We also carry a whole lot of other items that aren't in the repair category.