Hillman 660-Watt Plastic Keyless Lamp Socket, Black in the Light Sockets department at Lowes.com
Power Gear Polarized Light Socket Adapter, White, 4pk
Leviton 600-Watt 250-Volt White Outlet Box Lampholder R50-49875-000 - The Home Depot
Light Socket Safety Cap -Black Qty. 5 | eBay
3156 / 3157 Wedge Base Bulb Sockets - Wired | Super Bright LEDs
Wyze Lamp Socket – Wyze Labs, Inc.
Zevnico 8 Pack E26 E27 Light Sockets, Black Medium Screw Base with Shade Ring, Retro Period Style Edison Lamp Holder, Replacement DIY Making Light Bulb Socket Cover Pendant Lamp Holder Keyless Lamp -