ALUCSET 3 Pack Medium Screw Base to Medium Base Light Bulb Socket Porcelain Extender, E26 E27 to E26 E27 Lamp Bulb Socket Extension Adapter, (Set of 3, Porcelain E26 Extender): Amazon.com: Tools
Leviton 2006 Medium E26 Lamp Socket Extender - iLighting.com
E 27 Socket Extension Adapter With Switch, Plug-in Light Socket, Convert Outlet To Light Bulb Socket, Standard Maximum Wattage - Temu