3 Outlet Light Socket Adapter, Convert E26/E27 Bulb Socket to 3 Prong Outlet with Extension Cord, Flexible Light Socket Converter Suitable for Indoor Outdoor Porch Garage Patio Use (Black, 1 Pcs) :
E27 Light Bulb Lamp Holder Base Socket Adapter Extender with Switch EU/UK Plug | eBay
Swpeet 4 Pcs E26 Hanging Lantern Cord with On/Off Switch, Light Socket with 10.86 Inch Extension Cord Cable, White Pendant Light Socket Cord for Kitchen/Bedroom/Bathroom/Restaurant/Cafe Shop : Amazon.co.uk: Lighting
IP65 Waterproof Light Socket Extension E27 Lamp Holder with Cord for Outdoor Base Temporary Construction Led Light bulb - AliExpress