I use recycled cotton baby crib blankets (the thicker ones, not recieving size) for batting for lots of stuff. They're perfect for making new baby blankets out of old ones :). You can get them rather inexpensively at Goodwill and other thrift shops too. Usually they've been well loved enough that they make a very soft quilt. I also use them for batting for pot holders and hot pads...since they are already flame retardent they're perfect, and they are just the right thickness; not too thick not too thin.