Gaffer tape... long cable ties... canvas drawstring bag... spade...
Gaffer tape - yes, the rest no. Set of spare lamps, set of fuses, meter, a few spanners, screwdrivers, length of flex, piece of galv wire, roll of insulation tape, a few connectors, 12v compressor. Much less than I used to carry - I used to carry enough tools, to strip a car at the roadside, and sometimes actually did. I had to once strip the head from my Lotus Cortina, at the side of the A1 just north of London, when it ingested a nut from the carburettor. Fitted a new rear spring, to another Cortina, near Carlisle when one broke, and I just happened to have bought a pair of new ones, which were in the boot.