Quattrocento, an Italian eyewear retailer with an online delivery distribution model, has developed cardboard frames to help its consumers make a decision on their glasses while saving itself money in the process. Rather than sending actual glasses that consumers can return if they aren't happy with them, Quattrocento created what it calls the paper try-on: sets of cardboard frames shaped exactly like the proper frames that the company sells.
For consumers, the cardboard frames achieve essentially the same thing as a real pair of glasses, letting them test for fit and style. And for Quattrocento, the paper try-ons save money in many different ways. They limit the amount of inventory that the company needs to keep (since they don't need to save a stock of demo glasses,) and the also eliminate the need to spend money on return shipping.