Leviton Glazed Porcelain Lamp Holder with Pull Chain and Outlet R60-09726-00C - The Home Depot
Leviton 600W 120V White Light Socket Adapter - Farm & Home Hardware
Cox Hardware and Lumber - Light Socket To 2 Outlet Plug Adapter With Pull Chain, Ivory
Outlet to Socket Adapter,Plug-in Light Socket,Convert Outlet to Light Bulb Socket,Polarized 2-Prong Outlet to E26 E27 Screw Base Bulb Socket, 660 Watt, 125 Volt, UL Listed (4-Pack) - Amazon.com