Well my problem is I must have a little of everything.
Nothing worse (IMO) than you on the road but you need a tool or a socket (even if its something that can wait until I get home). I like to do most everything my self. Its more of a time saving thing than a money thing (I hate waiting on someone to fix something that I can do myself and do it better most of the time).
So I have just about everything you could want or need for the RV inside and out. Full set of sockets, wrenches, cuters, plyers, strippers, 10 diff screw drivers. Also including bailing wire, zip ties, assorted DC wiring and connectors, fuses, plumbing stuff, AC electrical stuff, multi meter, tape.... you get the idea.
So my list of "must have" is much larger than the average bear.
But I suppose a small socket set and some hand tools would do for most folks. You can alway add to your tools as you see fit.
2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, Fresh water surge tank, Black Tank Tornado flush, 4999 zip ties.