Bakermom is the only one I have seen that used steel wool in her pin cusion. This is really important because if you use fiberfill, your pins will rust. I don't know why, but that's something that my grandmother taught me, and the one I made with fiberfill has rusted all my quilting pins. So, just go to the home improvement store and in the paint section, they have packages of steel wool. Use that, and your pins will stay shiny and new.