Make your classic gamepads wireless with 8BitDo's DIY kits
 

8BitDo will happily sell you wireless controllers that are vaguely similar to classic gamepads of yore, but it clearly can't sell you the real deal without invoking massive copyright battles. It can, however, offer you the next best thing. The compan...

https://www.engadget.com/2018/07/17/...-gamepad-kits/