If it is a Community quilt and there is enough backing material all the way around, I trim it and 'self-bind' it. If there isn't enough fabric, I add a binding and machine stitch it front and back. If not a Community quilt (for donation to needy), I machine sew it on, fold it over, and hand sew it on the other side.
Making Community quilts has given me a grand opportunity to create different ways of making decorative bindings using two fabrics. If it comes out less than ideal, its still ok! I've discovered 6 different ways to make some really cool binding...I should write a book!! ROFL