One yard each of coordinating flannel, layered right sides together, round the corners if you like; I traced the lid from a whip topping container. Sew 7/8's of the way around, leaving an opening to turn. Turn right side out, press and top stitch with your favorite pattern stitch in a coordinating, or contrasting colored thread. Total time: One hour each. And I got the fabric off the Freebees table at guild. How cool is that?