Im following this thread with interest; as I'll be taking a trip into some rough territory next month. Thus far, I have the following packed:
Set of fine screwdrivers
A foot or so of strip magnets (all sorts of uses, holding fine screws from rolling away, etc)
LED penlight
3x/6x magnifying glass
I had some empty model paint jars that I filled with grease, and one with solvent
Lens spanner
The usual lens paper and fluid lens cleaner
Spare batteries for the light meter

The epoxy sounds like a good idea as well...maybe some 5min epoxy will find its way into this kit as well.