I've used the packaged $6.00 blankets you get at Walmart around the holidays. Some are plain color and others have designs. Choose the plain ones,if it has binding as most do at each end, take it off...carefully if you want to reuse. It works great! Also used flannel which is terrific and had some cheap fleece, an ugly gray color but it worked really well for batting! Like erstan947 said above, there are no rights or wrongs on this issue. Whatever works for you. Good Luck!