You can wrap arbitrary headphones using your hands into a tangle-free design without the aid of a billionaire. It unfolds very easily: https://www.youtube.com

You can wrap arbitrary headphones using your hands into a tangle-free design without the aid of a billionaire. It unfolds very easily: https://www.youtube.com/watch?v=DaXcNzxAB00 https://www.youtube.com/watch?v=DaXcNzxAB00 I don't bother tying them off (I stop around 0:45), and just bunch it up and stuff it in my pocket. When I pull out my headphones they are never, ever tangled.