#1. A stockpot
People eat a lot of noodles.
#2. A dishwasher
Not necessary, but definitely beneficial in washing 40+ dishes
#3. Baking soda
Essential. Especially for bare hands that cut jalapenos and stock pots that have noodles burned to the bottom.
Not a necessity. People WILL sit on the floor.
Oh my oh my oh my. The trash a crowd can produce.
#6. Delicious food.
Slightly optional. Today proves that people (especially college students) will eat almost anything. Even nasty pasta.
If you cook it, they will come.
If you don't have any of these things, no big deal.
Really the only thing needed to have successful Sunday Lunches is a really big God who does great things through flawed people.
I serve a magnificent God.