The Valley Thrift Store is great little gem in New Bethlehem. The store is run completely by donations and volunteers. Usually once a month or so they have $1 bag days where you go in and they give you grocery bags and you can stuff as much as possible into the bags and pay $1 per bag. They also have free days every so often where you take your own bags and everything in the store is free.
The selection in this store isn't the greatest, but it is a nice store with great intentions. I don't think that many people realize that it is there and so they take their items to Goodwill or somewhere.
The hours are a little strange, but if you get a chance to visit, you might be surprised by what you find.