Project Source 60-Watt Plastic Turn Knob Lamp Socket, Clear in the Light Sockets department at Lowes.com
25FT White Weatherproof Outdoor Pendant Light Lamp Cord Kit, E12 C7 Base On Sale Now! String Lights at AsianImportStore - AsianImportStore.com - B2B Wholesale Lighting & Décor since 2002
Light Bulb sockets for Lampshades
Polarity matters - Fine Homebuilding
Pendant Light Sockets, Sopoby 4-Pack Hanging Lamp Socket for E26 / E27 Base Bulbs, 5.9ft Light Cord Kit with On/Off Switch, White - Amazon.com
Leviton 2-Outlet White Socket with Pull Chain R52-01406-00W - The Home Depot
E26 E27 Lamp Socket to 2 3 Prong Socket Adapter Converter For Garages Patios and Porches White Polarizede e26 to US plug outlet
E26 Light Bulb Socket to AC Wall Outlet Plug Adapter On/Off Switch, 12 FT Cord - $7.19 - JacobsParts Inc