I currently have 5 tops that need to be quilted. So yes, I have quite a stash of tops. If a top is out of a layer cake or a printed collection, I usually put all the remaining collection with the top. But most of mine are scrappy batiks so, it doesn't matter about binding. Just the other day, I collected backs to go with the tops and they are all together in a plastic bin. One day, their time will come.