I always have mine in the late morning and serve oj (both plain and fortified) and a quiche and sweet rolls and fruit. Then for cookies, I always make sure to have extras for the party, but also do at least one bar cookie--they seem to pack well and usually are freezable. We always bring 4-5 doz, at least 3 kinds. We don't do games, but instead just chat and relax before the crazy of Christmas.
Oh--one of my all time favs for cookies is gingerbread people! Go great with a cup of tea on those late nights when I'm finishing up presents!