How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
Amazon.com: Gamecube Controller Compatible for Nintendo Switch, Nintendo wii Console and PC Games - 4 Pack Bundle with 4 Extension Cords and a 4-Port Adapter by EVORETRO : Video Games
Wired Gamecube Controller Gamepad For Nintendo Wii & Switch+NGC Controller Cable | eBay