You don't need two hands to play Super Mario Sunshine anymore.
The GameCube wasn't the most popular of Nintendo's consoles, but plenty of good games were released for the system and it survives today through the Wii's backwards compatibility. Tinkerer Hasse's brother still wanted to play games like Super Mario Sunshine and Super Smash Bros. Melee, but unfortunately can only use one of his hands. Thanks to Hasse, that won't stop him.
Hasse decided to craft a one-handed GameCube controller that still performs all of the functions of the regular two-hander. The major modification made appears to be the installation of a motion sensor to replicate the movement of either the D-pad or the analog joystick (chosen with a switch). Hasse also moved the left trigger, previously on the GameCube controller's shoulder, to the right-hand side of his new controller so that it can be pushed with the pointer finger.
It doesn't look like the process was easy, with Hasse having to analyze multiple controllers to find the best one to use. He shows it off while playing Mario Kart: Double Dash, and though he doesn't drive very well in the game, I'm sure with a little practice his brother can get the hang of it. Plus, it's better than nothing, and I bet other games that don't require such precise control movements would work just fine. This just goes to show you, Nintendo fans will find a way to play as their favorite plumber no matter what.