Nyce Power LampCharger Light Bulb Socket Adapter, Light Socket USB Charging Station, USB Charger Ports, Tablet and Phone Charger Adapter | 60W Max (Lamp Charger with 2 USB Ports)
Hanpearl Round E27 White LED Lamp Screw Base Halogen Bulb Holder Converter Light Bulb Base Lamp Socket Adapter (10 pcs) - - Amazon.com
TOPINCN Remote Control Light Lamp Socket E27 Bulb Base Adapter Wireless Lamp Bulb Holder Remote Control Light Switch 220V E27 Screw - - Amazon.com
Marquee Light Bulb Sockets | Flush Mount Lamp Holder
Lamp Holder, White color (Miniature Base, Bulb Socket), Pack of 10 - ScienceKitStore.com
Magic&shell 8pcs E10 Mini Bulb Holder DIY Physical Circuit Electrical Experiment Lighting Accessories Screw Type Light Socket Mounting Bracket Round Lamp Base - - Amazon.com