AC WORKS 15 Amp Household Plug to 20 Amp T-Blade Female Adapter - Amazon.com
Smart Plug 50 Amp Kit – TechnoRV
Amazon.com: ABN 30 AMP RV Power Inlet with RV Receptacle Plug and Weather Resistant Twist Cover for Marine Boat RV Shed Electrical Extension : Automotive
30/50 Amp, 125/250 Volt, NEMA 14-30P/14-50P, 3P, 4W, Plug, Straight Blade... – Leviton
parkworld EV Charging Adapter 20 Amp 250-Volt NEMA 6-20P Plug to Household 15 Amp 125-Volt 5-15/20R T-Blade Connector (For 250V) 68031 - The Home Depot
30 Amp 250 Volt Male Female Twist Lock 3 Wire Plug Nema L6-30P/30R YGA017-KIT | eBay