12/8 is Pretend to be a Time Traveler Day. Each member of your family can "travel" to a different time period, culminating with stories about those adventures over dinner.
5/10 is Clean up Your Room Day. Maybe the kids won’t find this as fun as you will.
3/14 is Pi Day. Celebrate this mathematical marvel with pies of all types. Whichever kid memorizes the most digits get the biggest piece.
9/19 is International Talk like a Pirate Day. See who can talk this way the longest without laughing—it won’t be easy. Arrrr!
5/2 is International Scurvy Awareness Day. Use it as an opportunity to emphasize the importance of getting your necessary servings of fruits and vegetables.
10/30 is Mischief Night. On second thought, maybe you should keep this one a secret from your kids. Same with Ask a Stupid Question Day on Sept. 28.
9/7 is Grandparents Day in 2008. Honor your parents or in-laws by giving them the parenting duties for the day, while you catch up on some relaxation.
11/22 is Start Your Own Country Day. Have each family member make up the Constitution, flag and mascot for their country—maybe even make up its silly holidays, too.
4/4-10 is National Read a Road Map Week. Devise a plan for the perfect road trip, or just use the time as an opportunity to learn more about our country’s geography.