> ....  It depends on how well
> you know your particular
> vanagon.   Meaning how well do you know the upkeep of your vehicle?
>

this. I'd aim for that.

FWIW.... on my recent nearly 10K mile trip, I found that simple things
like emery cloth, bailing wire, duct tape, electrical tape, various
fasteners, soldering iron, electrical connectors, wire, connector
cleaner, various lubes, have been most useful. I'd carry those
regardless of what spare parts I'd carry. In fact, I also bought a
cheap cordless drill and bits while on this trip. Something I used to
carry some time ago. Mostly handy for modifications done while on the
road but potentially super handy regardless.

Neil.