Amazon.com: Multi Plug Outlet Extender, Vsanstar 3 Prong Wall Tap 4 Way AC Electrical Outlets Power Strip, Power Plug Splitter Grounded to USA Adapter for Home Office, Kitchen (USA Plug Outlet) :
The Little Green Wire – AC Connectors
How to Wire a Three Prong 110V AC Plug | Hunker
circuit breaker - How can I safely utilize a dryer outlet to power 100V and 220V loads? - Home Improvement Stack Exchange
GE 3-Outlet Extender Wall Tap Cube, Adapter Spaced Outlets, Easy Access Design, Grounded, 3-Prong, Perfect for Home or Travel, UL Listed, White, 58368 - Newegg.com
Polarized Vs. Non-polarized: Household Electrical Safety – AC Connectors
Can I upgrade these old outlets to new 3-prong outlets even though it's old wiring? : r/askanelectrician
ELEGRP 2 Prong to 3 Prong Grounding Adapter Plug, Outlet Extender with 2 AC Outlets (White, 1 Pack) EA0100G-0101 - The Home Depot
3 Packs Lamp Post Outlet 120V Grounded Electrical Outlet Energy Saving Light Pole Plug for Outdoor Lamp Post and Poles, Energy Saving and Weather Resistant, UL Listed, Black - Yahoo Shopping
ELEGRP 15Amp 125-Volt 2-Prong to 3-Prong Triple Outlet Grounding Adapter Plug, Ivory (3-Pack) 5506-IV3 - The Home Depot
Power Supply Extension Cord, C14 to 3-Prong Grounded 110V, 1ft, Black, Ziotek, ZT1310430
What Is the Difference Between Two- and Three-pronged Plugs? | HowStuffWorks