After going to the Scotch Piper in the RB44 with the lads and lasses of the West Lancs MVT I think I can add some more items that I forgot to take with me.
Cooking Oil
Towels
Pillow (the 9 by 9 tent canvas was a hard substitute)
Spare Light Bulbs
Genny tools for when the beep:argh: is reluctant to start (Spark Plug spanner, emery paper & wire brush). I drove down in the diesel RB44 so not likely to carry those tools.
Spare fuses for the plug for the lights that plug into the generator.
Everyone elses suggestions
Tin opener
Bottle opener (cork screw type for the wine lovers amongst us as well).
Spatula/fish slice
Pain killers
BBQ
Camera
Map book
Frisbee to keep the kids quiet or exercise for the dog