Curious if there was a way to make your own retractable cables with existing cables. It doesn't seem like it'd be that complicated given the right mechanisms, just wasn't sure if they were for sale ...

Herotech, a team of visionary engineers, has successfully built a real retractable lightsaber with a blade of actual light that extends and retracts from the hilt. Spearheaded by Jacob Uy, Madie Tong, ...