A post made not too long ago, suggested taking an inventory of how your RV is actually built and bring along only the tools necessary to fix any object in your RV. For example, most RV's don't have Philips head screws, they have Robertson. So why drag along a Philips screwdriver when everything in your camper is Robertson? It's just one EXAMPLE, but multiply that by the amount of "stuff" we "think" we need and really don't, and a lot of "stuff" can be eliminated.
I'm also a strong advocate for outfitting my camper with items that have multiple uses. And my best example is, bring along a good pair of meat scissors and you don't need any others. Meat scissors will cut, not only meat, but paper, metal, plastic, and cloth. So you don't need to bring along 4 or 5 different kinds of scissors when the right one will do it all. Same is true for a hammer. Why drag along a hammer when a hatchet can be used, not only for chopping wood, but for driving a nail back into a picnic table too. Making this simply change, can and does, eliminate a LOT of over stuffing the RV with unnecessary clutter.
If a part fails, for example the sail switch on my furnace, well, I'll just have to track down an RV parts place and get what I need then. I'm not dragging along a separate trailer with all the parts to rebuild an Indy race car.
OP, thanks for the confirmation that far too often, we carry too much "stuff" we really do not need! Thanks!