Take a picture of every wacky road sign you pass. Make it a competition to see who can snap shots of the most signs. Give extra points to really weird signs.
Use your car's navigation system (GPS) to search for all the U.S. historic sites tied to presidents.
Count all the Amish buggy-crossing signs you see. Double points for each actual buggy you spot! Amish live in 30 states across the U.S. Ohio, Indiana, and Pennsylvania have the highest Amish populations.
Photograph Land Features
Take photos of different types of land features, like mountains, cliffs, and deserts.
Make a Movie
Write a script. Cast all the people—and animals!—in the car as characters in the movie. Shoot the movie using the inside of the car as the only setting.
Play Window Bingo
Print blank bingo cards before you leave. In the car, fill out the squares by writing down things you think you'll see out the window. Mark off each thing you see. The first to get five in a row wins.
Find the Alphabet
Spot each letter of the alphabet, in order, on any form of text outside the car. Play as a team or individually—the first person to get to "z" wins!
Play "I Spy" with physical and cultural characteristics you see as you travel. First, look around and silently pick a characteristic that everyone will be able to see. Say: "I spy with my little eye . . ." Then describe the characteristic and have your family members take turns trying to guess what you see.