While the turkey's in the oven:
1. Have kids use fabric pens to write what they're most thankful for on an inexpensive tablecloth.
2. Get to know each other. Ask everyone to share a favorite childhood memory.
3. Keep books with riddles and knock-knock jokes on hand for instant giggles.
4. Have scrapbooks and photo albums handy. Encourage kids and grandparents to go through them together.
5. Set out classic games like Scrabble, Twister, and checkers. Have Play-Doh for the little ones.
6. Burn up energy with run-around games like tag and hide-and-seek.
7. Hand out disposable cameras so kids can record their own holiday moments.
8. Put kids in charge of welcoming guests and taking coats.
9. Remember: Nothing beats an old-fashioned leaf fight.