Mattel Shop: 20% off + FREE ShippingDecember 12, 2011 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Today, December 12th, the Mattel Shop is offering 20% off all orders plus FREE shipping! The discount will be applied automatically after you add some items to your cart. This should make for some awesome toy deals for the kiddos!