We love the license plate game when taking road trips. You know, where you try to spot as many of the 50 state plates as you can. On our last road trip we downloaded a really cool app to help us keep track (rather than writing them all down or checking them off our paper list).
This one, called "Plates Free" in the Play Store, not only included Canadian and Mexican plates, but it also showed pictures of the most common plate for the state! It put a star next to the ones you've seen and keeps count of them, too!
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