Multi Plug Outlet Extender, Power Strip Non Surge Protector Electric Outlet Splitter with 3 USB Wall Charger (2 USB C), Multiple Outlet Expander for Cruise, Dorm, Travel, Home, Office(White)

What about a cube with one ac outlet and various USBs? Per my understanding they are officially not allowed, but I always bring those in my carryon and never had an issue. https://www.amazon.com/dp/B0CXDKGL68 YMMV, of course.