NetFlix tear-off flaps are sturdy, colorful, and perfect for origami and paper airplanes, so don't just toss those wrappers into the recycling bin. Although most origami requires special paper squares, we have adapted these designs so you can use NetFlix flaps without alteration. Just tear them off carefully at the perforated line and follow our step-by-step instructions for making paper-folding magic.

Source: http://www.netflixorigami.com/

(do people still get NetFlix in the mail?)