This is a good time to bring a game or two to a church gathering. The kids might need something to entertain themselves while everyone else stands around and talk about christmas trees, gas prices, and whether or not the new president really got the office or should it have been someone else. The old standby that fits in a pocket and works alone or with a group is a deck of cards. And when the other players arrive, settle in for a night of laughs, serious contemplation, and frequent bathroom breaks from all the soda you'll be drinking. Good games for 4 or more players are Hearts, Spades, and Euchre.
Pairs operate playing against each other, and the winning team always stays at the table.
If you don't think you are very good at games, if you are the one that always seems to lose, then here's one more option. This is something that I and my father did every Christmas while I was growing up. We put together a jigsaw puzzle. Whether it was a 500 piece puzzle or a 1000 piece, round or square, difficult or easy. We'd stand around the table, with our Pepsi up on a distant shelf circling the table like buzzards diving for the feast.