10 Pcs Light Bulb Holder E10 Socket, Mini Plastic Light Bulb Base Lamp Holder for Student Experiment, Lighting DIY Crafts, Physics, Screw Type Bulb Socket(Black) - Amazon.com
Remote Light Socket,Wireless Lamp Bulb Holder, Remote Control Light Bulb Socket,E26/E27 Lamp Bulbs Socket Holder withTiming On Off Switch for Light Lamp Fixtures,30m Distance Control,No Wiring Needed - Amazon.com
Lamp Holder, White color (Miniature Base, Bulb Socket), Pack of 10 - ScienceKitStore.com
9 Pack E26 E27 Lamp Socket with Shade Ring,Light Bulb Socket Holder Screw in Standard Base Medium Edison Retro Pendant Bulb,Basic Black Replacement Hold Light Cage Cover - Amazon.com
SHELLTON 3-Pack Plug in Light Socket,E27 Light Bulb Socket Adapter, Lamp Socket Extender Adapter,Extension Lamp Bulb Holder with On/Off Switch US Plug - Walmart.com
Leviton 660-Watt Keyless Twin-Socket Lamp Holder Adapter R52-00128-00W - The Home Depot