Five or ten pounds of oven fry potatoes
Five pounds baked yam spears
carrot kugel (gebroks)
pickeled celery (really fast pickler, one good bunch fills five pint jar)
cinnamon apple slice kugel with ground walnuts
coleslaw and other cabbage salads
fermented borcsht (plan ahead)
Tzimmes
If you get the quantities right, nobody will be left hungry, and not everyone standing either. Fewer to bug you in the kitchen.