This Nintendo Switch adapter turns your GameCube controllers wireless - The Verge
Amazon.com: Veanic 2.4G Wireless Gamecube Controller Gamepad Gaming Joystick with Receiver for Nintendo Gamecube,Compatible with Wii (Black) : Video Games
Amazon.com: PowerA Wireless GameCube Style Controller for Nintendo Switch Grey : Video Games
PowerA GameCube Style Wired Controller for Nintendo Switch | Nintendo Switch Wired controllers. Officially licensed. | PowerA
Gamecube Controller, 2 Packs Classic Wired Controllers Compatible with Wii Nintendo Gamecube : Amazon.com.au: Video Games
Here's Why The PowerA Wireless Gamecube Controller For The Switch Surprised Me - YouTube
Amazon.com: PowerA Wireless GameCube Style Controller for Nintendo Switch - Purple : Video Games
Amazon.com: PowerA Wireless Controller for Nintendo Switch – GameCube Style: Gold : Video Games
Switch Gamecube Controller Compatible Games Shop Clearance, 65% OFF | lamphitrite-palace.com
Switch Gamecube Controller Compatible Games Stores Online, 56% OFF | lamphitrite-palace.com
HyperPodium 4-Port Controller Base for GameCube compatible with Nintendo Switch