Yeah, had my grey tank fall out on me while in camp... Twice! Didn't fix it right the first time obviously.. But, each time, I fixed it on the spot and all is good now for the last two years.
I carry more stuff than I need (tool wise and other stuff), but there are times when I've lent out a lot of stuff to other fellow campers as well, so it all works out.
Anyway, I've had all kinds of other things happen over the past 15 years I've been camping with the same trailer.. Always just seemed to have the proper tools or resources available to fix the issue..
I just look at it as another story to tell and another life experience.
The other thing is to "learn and adapt" from all these experiences too.. ;)
Good luck!
Mitch