Best Sellers in Electrical Multi-Outlets. #1. Sleek Socket Ultra-Thin Electrical Outlet Cover with 3 Outlet Power Strip and Cord Management Kit, 3-Foot, Standard Size. 4.7 out of 5 stars. 30,154. 1 offer from $23.95. #2. GE 6-Outlet Extender Wall Tap, Grounded Adapter, Charging Station, 3-Prong, Secure Install, UL Listed, Black, 54840.