I just 3D printed my dock extension that holds my GameCube adapter, but running the GameCube cables through my living room to my TV stand is a chore (especially with GameCube third-party controllers) and often very short cables). These extensions really did the trick for my setup! The plugs on extension cords are very tight, so you're more likely to pull the cord out of the adapter rather than the extension cord. I also didn't notice any noticeable lag in Smash when using it. I would highly recommend them to anyone looking to extend the length of their GameCube controllers!
Get the Ultimate Gaming Experience with PlayStation Vita 3G/Wi-Fi Bundle
50 Review
Sony PSP Japan Street Stage - Initial Edition
33 Review
Game console Sony PlayStation Portable Slim & Lite PSP-3000 SSD, black
45 Review
Grand Theft Auto V Premium Online Edition Xbox One Game Dongle
43 Review