Empirical Monetary Seraph power strip with 2 prong plug in the meantime look for Monastery
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3 Prong to 2 Prong Power Strip W/ 2 USB Ports 3Outlets 5/10FT Cord Rotating Plug | eBay
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Commercial Electric 2 to 3-Prong Triple Outlet Adapter LA-12 - The Home Depot
Amazon.com: WANDOFO 2 Prong 8 Outlet Power Strip, 6 FT Extension Cord with 3 USB Ports, 1625W 1050J Surge Protector, 2 Prong to 3 Prong Multi Plug Outlet Adapter Converter, Polarized Plug, White : Electronics
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9 ft. 3 Outlet Braided Extension Cord, 2-Prong Power Strip, Gray (2-Pack)
LENCENT 2 Prong Power Strip with 3 USB, 3 to 2 Prong Grounding Outlet Adapter, Polarized Plug, Surge Protector, 3-Sided 6 Outlet Widely Spaced Extender, Mountable Wall tap for Non-Grounded Outlets - Walmart.com
Amazon.com: 2 Prong Power Strip 10ft Extension Cord, NTONPOWER Flat Rotating Plug Surge Protector Power Strip with 3 Outlet 4 USB Ports, 2 Prong to 3 Prong Outlet Adapter for Old House
Amazon.com: Two Prong Power Strip 10ft: TROND 3 Prong to 2 Prong Outlet Adapter Polarized Extension Cord with 3 USB Ports & 4 Widely Spaced Outlets| Wall Mountable 1440J Surge Protector for
Amazon.com: WANDOFO 2 Prong 8 Outlet Power Strip, 6 FT Extension Cord with 3 USB Ports, 1625W 1050J Surge Protector, 2 Prong to 3 Prong Multi Plug Outlet Adapter Converter, Polarized Plug, Black : Electronics