That is an ambitious project but you seem to be off to a good start, I like the idea of flowcharting basic problem resolution to prevent more damage being done from them guessing and trying out various things. I include a printed list of all the items in the vehicle and their location as a reference, this is kept in the glovebox both to prevent useless rummaging and for the benefit of someone in the car who may not be familiar with it.
Good list of items, I would add some T/P and hand sanitizer and a whistle.
Kona1