Two-way Rotary Switch E27 Lamp Holder for Lamps Lighting Accessories Twist Type | eBay
Licperron Vintage Table Lamp Base, E26 E27 Industrial Desk Lamp with Plug in Cord On/Off Switch Bedside Lamp Holder for Home Lighting Decor, 2 Pack
Leviton Turn-Knob Socket Lamp Holder R50-10083-016 - The Home Depot
Power A Edison E26 Base 5V 6V Light Bulb Directly From Any USB Port - 12VMonster Lighting
Licperron Vintage Lamps Table Lamp Base E26 E27 Industrial Small Desk Lamp with Plug in Cord On/Off Switch Bedside Lamp Holder for Home Lighting Decor, Small Lamp - - Amazon.com