This is why all of us need to carry emergency "just get me to the next town" repair parts.
Other than the basic wrenches/sockets, we also carry specialty sockets/wrenches for those odd never-seen-one-like-that nuts/bolts that we have on our vehicles, gorilla tape (better than duct tape), RTV gasket sealant (replace every few years), various hose clamps, plumbing repair parts, electrical (DC & AC) stuff like bits of wire, fuses, electrical tape and connectors. I often have a tire plug kit in the Jeep but need a new one since I used the last plug not long ago (the Home Depot parking lot is bad on tires), bungie cords, electical ties, rachet straps, LeakSeal (for leaky roof), jumper cables oil, antifreeze and other things I can't remember right now.
What do others carry?
The last thing RV related we fixed in a parking lot was in TX. We had to replace the sepentine belt on the old 1976 Class C. Amazingly enough the local big chain auto parts place had ONE in stock. We were overjoyed and the Tractor Supply we pulled into was very nice about us working on the Class C in their parking lot. Shredded the sepentine belt on my daughter's jeep outside of ABQ. Did that twice in recent years. Both times replaced a pulley and the belt on the side of a highway (we managed to get off of the interstate). Both my daughter and I carry repair books in our jeeps. Very handy too! We bought ours at auto parts stores.