Just saw this... Crayola is definitely a good stop for kids. Dorney Park is not far, and in PA. Cabela's in Hamburg is the closest large outdoor store. It's the largest Cabela's and has some great displays in the store. Below are a few other suggestions:
Ringing Rocks County Park
Ringing Rocks Rd, Upper Black Eddy, PA 18972
Dorney Park - Allentown, PA
Cabela's - Hamburg, PA
Lehigh Valley Iron Pigs - Allentown, PA (minor league baseball)
https://www.877trainride.com/ - Delaware River Train - they were doing a dino days one - not sure if thats still happening.
Lehigh Valley Zoo - Allentown, PA/New Tripoli, PA
A few places that are a bit further
Land of Make Believe - Hope, NJ