BeMatik - Black extra-flat elbow plug male plug for behind furniture: Amazon.co.uk: Electronics & Photo
GE 25 ft. 16/3 3-Outlet Office Extension Cord with Low-Profile Flat Plug, Gray 43025 - The Home Depot
GE 3 Outlet Extension Cord 25 Long Cord Flat Plug Gray 43025 - Office Depot
3 Outlet Wall Tap Power Strip Adapter Flat Plug Safety Cover Extension Cord 3FT 879561261690 | eBay
Flat Plug Socket, Pack of 2 Flat Socket 3 in 1 Swivel Head 180° Adapter with 3 Plug Outlets Place Behind Sofa, Shelf, Headboard Tables or Furniture.: Amazon.co.uk: Home & Kitchen
EVOline plug black, super flat connector with movable plug-head
Flat Angle Plug Extension Cord Twin Tap UL Listed White 12-Foot Behind Furniture | eBay
iF Design - ECO simplest flat plug
This Flat Extension Cord Will Make Your Life So Much Simpler | Architectural Digest