To make a Christmas bow for a wreath, you'll need a length of ribbon, wire or pipe cleaners, and scissors. Start by measuring out a length of ribbon that's about twice the width of the wreath. Next, fold the ribbon in half lengthwise, and use the wire or pipe cleaners to secure the loop at the center. Then, wrap the ribbon around the wreath, alternating the direction of each loop to create a layered effect. Finally, secure the ends of the ribbon with wire or pipe cleaners, and trim the excess.