I remember one place, Farmer Brown's - but cannot tell you what town it was in. The downstairs of this big red barn store was a great food market, and upstairs, the center was open with quilts displayed along the railings. Fabrics were basic and well-priced. Without spending a penny, you could leave with a wealth of ideas.
My ex could enjoy himself with the free samples of cheeses and cold cuts, and still be nibblling on a bag of "penny candy" when I came down. Around Christmas, they would set up a petting zoo outside with live reindeer!
I am sure plenty of PA folks will jump in with ideas. Sounds like a wonderful trip!
http://www.padutchcountry.com/shopping/quilts.asp If you like antiques and farmer's markets, the Green Dragon and Renningers are (although now "discovered") both great, last time I visited.