What items, beyond the every-car basics like jumper cables, should I keep in my 1982 Mercedes 300D? I started a list already, but what else should a car of this age have on hand at all times?

Basic metric socket wrench set including 10mm and 13mm
Multi tool

Vise grips
Fuses
Fuel Prefilter
A few #8 10mm Stainless steel nuts, bolts, washers
A few pairs of rubber gloves
Duct Tape
A gallon of premixed coolant and a funnel
WD-40