Is it at a campsite?
Smores for roasting over the campfire.
Refreshments plus plain water.
Hot food either precooked or ready to cook.
Salad
or mashed potatoes with gravy ( sweet potatoes good t=for this time of year).
Vegetables ( if not having a side plate of salad).
Warm blankets etc
Flashlight
Emergency packet ( always bring along).
cellphone etc