With your Airstream in tow and motoring down Retro Highway you see a bit of Americana as you pass various eateries and their signs of yesteryear. Now you can eat on those signs. A set of 4 melamine Restaurant Sign dinner plates ($40) capture bygone days of flashing light bulbs, neon and hand painted signs. Also available is the Let’s Eat serving tray ($20)and a set of 36 Roadside disposable place mats ($23) to match.