We will be serving soup tomorrow. We purchase the resturant soups from wholesale food stores in the area (ours is Cash N' Carry, United Grocers). You do not need a business license to purchae there. We then buy rolls/bread from Costco. The staff loves it!
In January we host a "Tailgate Party". We decorate for the Super Bowl and bring in smoked turkey (I bought it today for $5 and a dad will smoke it), rolls, salad, pasta salad, chips & salsa, deviled eggs, brownies & cookies and a few bottles of root beer to make it authentic. The teachers loved it. Couldn't believe how fast the deviled eggs dissappeared!
You could do around the world and have a roasted turkey/ham or roast beef, some latkes and challah bread pudding, perhaps a mediterrainian dish, I don't know--find some fun things. Go to foodnetwork.com and look under their holiday meal planning.
I just went to a lunch yesterday where they set up a "potato bar" with baked potatos and tons of different toppings (chili, chives, brocolli, cheese, butter, sour cream-shoot you could do sliced roast beef, chicken salads all for the potato stuffing) and maybe do Spuds and Suds with the gift being some luxurious bath soaps and stuff.