Southwire 15-Amp Single To Single White Basic Standard Adapter in the Adapters & Splitters department at Lowes.com
ELEGRP 15 Amp 125-Volt 2 Prong Grounded Single Outlet Adapter Plug with Red Indicator On/Off Switch, White( 4-Pack) 5511-WH4 - The Home Depot
Single Tank Adapter (STA) - Dive Rite
Single Adapter (1 Count) – Legend Distributors
Project Source Adapter 15-Amp 3-wire Grounding Single To Triple Orange Basic Standard Adapter in the Adapters & Splitters department at Lowes.com
Amazon.com: BindmMaster 2 Prong Single Port Power Adapter with Red Light Indicator On/Off Switch to be Energy Saving, White (3 Pack) : Tools & Home Improvement
2 Single Port Power Outlet Wall Tap Adapters Beige On Off Lighted Switch Control - Walmart.com
LC to FC Simplex Fiber Optic Coupler Singlemode Adapter - Beyondtech