We saw this concept in a high end cooking store and just had to duplicate them for a fraction of the price.
Get some cheap felt (real or artificial) from your local craft store… I purchased this hideous colour from the sale section.. it will be in the drawer not on display. Using a plate or pot draw a circle representing the inside of the pan, then draw a larger circle that represents the outer of the pan plus about 1 1/2 to 2 inches. Cut out around the outer circle and then make 8 wedge shaped cuts to the inner circle. Don’t worry too much about how accurate you are.
Make a set that matches your frying pan collection and now you can stack them without scratching the Teflon.
Total cost was about $5 for 3