YI LIGHTING LED E39 to E26 Adapter, Mogul to Medium Base Light Bulb Lamp Socket Converter Porcelain | Wayfair
oviitech 2 Outlet Light Socket to Plug Adapter, Electrical Screw in Light Bulb Socket Outlet Adapter, Lamp Holder, Dual Polarized E26 ETL, White (3PACK) - Amazon.com
Othmro Light Sockets,3Pcs E14 to E27 Socket Adapter, PBT Plastic AC 100-240V 150Degree Heat Resistant Light Bulb Socket Converter Commutator for Home Light Fixtures LED Grow Light Socket Stand White - -
Leviton 660-Watt Keyless Twin-Socket Lamp Holder Adapter R52-00128-00W - The Home Depot