"The Manners Game". Each family member gets 3 popsicle sticks to put on their place mat. Go around the table and have everyone recite a few "Table Manner Rules." Then if one family member sees someone breaking a "Table Manner Rule" he gets to take one of their popsicle sticks. Whoever has the most popsicle sticks at the end of the dinner wins. You can intentionally make a few "manner mistakes" and pretend to be shocked when your children correct you.