Adapter for Gamecube Controller, Super Smash Bros 4 Port NGC Controller Adapter with Indicator Light, 3 in 1 GC Controller Adapter Nintendo Switch/ Wii U/PC, for Windows / Vista/ Mac OS | Walmart Canada
Controller to USB Adapter for Sony PlayStation® Controllers - XYAB
Amazon.com: SogYupk 2 Pack Controller Replacement for Gamecube Controller,Wired Controllers Classic Gamepad compatible with Nintendo and Wii Console Game Remote(Black 2 pcs) : Video Games
Convert Playstation 2 PS2 Controller Converter for Original XBOX & GAMECUBE | eBay
Amazon.com: FIOTOK Gamecube Controller, Classic Wired Controller for Wii Nintendo Gamecube (Blue & Red-2Pack) : Video Games
Amazon.com: Dliaonew 2.4G Wireless Gamecube Controller, Classic Gamecube Wii Controller with Receiver Adapter for Wii Gamecube NGC (Pink and Purple) : Video Games
Nintendo GameCube Video Game Controller Adapters for sale | eBay
$5.24 Playstation 2 to Wii & GameCube controller adapter - SuperGadgets.ca