An earphone cable spool. Uses tension to hold the cable and stop tangles. Very quick and effective to use.
Bring the ends of your earphones together so the buds and plug are together.
Put the 3 cables through one of the small loops so that the buds and plug are in the middle.
Start winding the cable around the ends.
When you're getting close to the end, squeeze the holder together and hook the cable over one of the small loops. (video here: https://youtu.be/uVzNitdP3DQ)