Turn a Wine Stopper Into a Universal Headphone Holder
Some headphones come with cases that can help prevent tangling, but many don’t. If yours isn’t (or you’ve lost it), a wine stopper can do the job with just a couple of holes.
As one Instructables user explains, you can punch a small hole in the top of the wine stopper to accommodate the jack, and use a knife to cut a slot on the other end to accommodate the headphones. Then you can wind the cord around the plug. This should help make sure your headphones don’t get tangled when you drop them in your bag or purse.