you could make a platter of meats eg fresh chicken, ham, salami etc and then have salads and chesses to make own rolls.

Or you could have a bbq (sausages, kebabs, chicken wings etc)

a selections of pies from local bakery and serve salad or wedges with it.

Baked Potatoes and just have a selection of stuff for them (bacon, onion, salsa, cheese, sour cream, corn, closelaw etc )and they build there own.