Leviton Socket with Outlets, White R52-01403-00W - The Home Depot
Screw-In Socket Adapter | The Freestyle Projector | Samsung US
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)