Cheap and lots of fun. Actually it is more of a family reunion sort of thing as we do not all exchange gifts - the emphasis is on family and getting together. This year we had 25 people. It was a challenge finding spots for everyone to sit and eat. So I understand where JS is coming from.
Homemade lasagna is always a treat.
We do several kinds - some meat, some veggie, one with diced chicken and four cheeses. Soups, stews, chili are also great. If you just aren't sure, try planning your meals and then prepping some of the foods. For instance, crock-pot or stew a few chickens and then dice up the cooked meat, season, and freeze in appropriate portions. You can do the same with ground meat like season, cook with onions, garlic, whatever your preference is, and then freeze in whatever quantity your recipes call for.