MayFlash Gamecube to Wii & Wii U Adapter - YouTube
Defeating The Wii Mini As The Internet Watches Over Your Shoulder | Hackaday
Amazon.com: Gamecube Controller Adapter for Switch/Switch OLED.Gamecube Adapter Compatible with PC Wii U.Adapter with 4 Ports 6 FT(1.8M) Cable Support Turbo and Vibration Features Super Smash Bros : Video Games
Amazon.com: Y Team Controller Adapter for Gamecube, Compatible with Nintendo Switch, Super Smash Bros Switch Gamecube Adapter for WII U/PC with 4 Port : Video Games
CONECTAR CONTROL DE GAMECUBE en una Wii Mini - YouTube
YouTuber does what Nintendon't and builds a working GameCube Classic - The Verge