Project Source 660-Watt Off-white Medium Light Socket Adapter with Pull Chain in the Light Socket Adapters department at Lowes.com
Amazon.com: Nyce Power LampCharger Light Bulb Socket Adapter, Light Socket USB Charging Station, USB Charger Ports, Tablet and Phone Charger Adapter | 60W Max (2 Pack - Lamp Charger with 2 USB
Leviton 660-Watt Double Light Socket Adapter, Brown 128 - The Home Depot
E26 Medium Base Screw In Socket Adapter for LED Ceiling Lights Downlight | Step 1 Dezigns
Amazon.com: 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) : Tools