Universal Grounded Wall Outlet Adapter Plug - USA / Canada / Japan
6 Outlet Grounded Adapter
TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter - 3 Pin to 2 Pin Plug Socket Adapter Extension for Electrical Cord, Household, Workshops, Industrial, Machinery (2 Pack) - - Amazon.com
USB to AC Charging Adapter fits U.S. wall outlets : A. T. Guys, Your Access Technology Experts
Universal Plug Adapter for Standard USA Outlet - Walmart.com
Wall Outlet Extender Plug, 2 Pack - White Multi Plug Outlet Splitter W - iron forge tools
Amazon.com: 2 Prong to 3 Prong Outlet Adapter - TROND US to Japan Plug Adapter 3 AC Outlets Extender 2 USBs, 3 Prong to 2 Prong Travel Power Converter Adaptor for USA