The church music boxes have been our all time best seller.  We put music box inside the church with a wind up key on the back.  We usually use "Amazing Grace" for the music box.  However we've also used "How Great Thou Art" and other well known gospel songs.  We make the churches out of cedar, walnut, oak, and pine.  Here are examples of cedar, walnut, and pine. 

        Click image to enlarge

This makes a wonderful gift for for any church goer!  Their small size would be great to ship also!