The State of Geography

Here is a really clever idea submitted by a carschooling mom in Arkansas.  Before going on a car trip, she copies or prints a map of the United States for each carschooler:  Next, she purchases an inexpensive package of stamp rings.  (Each stamp ring has a different symbol or picture on it, so the kids can tell them apart.)  The kids pick the ring they want and put it on their finger:  As they ride, carschoolers watch for license plates from other states.  If they see one, they locate that state on their map and stamp it with their ring.