Since it's going to be a Sunday, you could do Brunch-type stuff, and I don't know if you're also having younger kids, but there are tons of recipes for non-alcoholic delicious holiday punches online.
Some ideas you may like (all or most can be prepared ahead). There are plenty of great recipes on line:
Stuffed mushrooms (make ahead and warm as needed)
Crudite & cheese platter with dip and hummus - so easy, all store bought stuff, put onto a pretty platter at home.
Shrimp cocktail (if you're near a Costco they have really good ones already made).
Quiches (make ahead and just warm up as needed), you can pre-slice them for easier serving.
Mini-sandwiches, like turkey, cranberry sauce and a shmear of stuffing on little brioche or potato rolls, warmed rotisserie chicken breast with swiss cheese and a little Dijon mustard, with some baby spinach on pretzel rolls, and tomato, basil and fresh mozzarella on crisp Italian rolls. This can be done a little while before your start time. You can line a tray with escarole or kale, and have the sandwiches all set up on top with pretty toothpicks and they're easy to eat while walking around. Bowls of potato chips, pretzels, etc. on the side.
A big mixed salad, with orange sections, some dried cranberries and croutons made from French toast (the croutons could be made way ahead and frozen). A carafe of raspberry vinaigrette on the side.
If young kids are coming, a take-and-bake supermarket pizza is great to have on hand and you could throw it into the oven and just cut small slices for the kids.
A nice assortment of desserts, a big cut fruit bowl, ice cream, and maybe one showstopper cake. People will probably offer to bring desserts, too. Coffee, tea, mulled cider, egg nog, punches (alcoholic and non), or a mimosa table set up in the kitchen.
