Pennsylvania Route Recommendations

Thanks for the helpful recommendations everyone! Since it was only vaguely inferred in my opening post, for clarity we are passing through on the way home from an east coast destination and will be stopping late afternoon mid state for the night and getting back on the road in the morning. Nonetheless, it sure seems like there is a lot to do outside of the two most famous options (Gettysburg and Hershey's) which we plan on devoting time to on a future trip.