I have copied David Henry's post from the 2017 International Meet Forum, to the Technical Forum, because it deserves its own thread and replies.
That has to be an extremely heavy tote. I have quite a few spares, however, I don't have a spare starter, and only last month did I acquire a spare alternator. I do however, do have a couple of spare regulators, but without both a regulator and an alternator, one isn't very much good without the other. I never saw much of a need to carry spare fluids, except for water, since the oils rarely if ever get low all at once, and you can almost always pick these items up locally. I do keep a 6 penny nail head, O ring, and a tubing wrench along for the ride, but have never seemed to ever need it. This is only in the Cadillac, since it won't work for the Chevrolet. Anyone care to guess what it is for....
To plug that brake line, do you carry leather belts for your babbitt bearings.