Thorntons Printable Coupons – Check out this week’s Fan Exclusive Coupon: FREE Frito Lay munchies, peanuts or sunflower seeds! To print the coupon please click the Welcome Tab at the top of the page. You may also scan the coupon from your phone using the Thorntons Mobile App. Offer valid at ALL Thornton locations. Limit of one coupon per customer. See coupon for details. Expires 10/28/13.