Nesting pots and pans saves space in a cupboard, but you should take steps to prevent them from damaging one another. Preserve stainless-steel interiors by inserting large coffee filters between pans. Nonstick surfaces are protected just as well by soft paper towels. For seasoned cast-iron skillets, use coated paper plates, which won't soak up oil.
Organizing Good Things 2004, Volume 2004 Special Issue 2004