Apparently a read core can’t help you manage your tangled cords, but AppleCorecan do this.
As its name implies, AppleCore is an apple core shaped cable organizer with vibrant color. Of course, the unique plastic apple core can not only improve your mood, but also manage your tangled cords. All you need to do is to wind the cords onto the middle part of AppleCore, and get the two sides of the cord through the each end of the cable organizer, and then a neat space will be shown before you.
AppleCore cable organizer is available in three sizes for various cords and wires. The smallest AppleCore for earbud cord is priced at $1.99 USD. If you’re interested, jump to AppleCore official site for more detail. Additionally, if you need more options, you might like to check CableClip, CableCaps and more via “cable organizer” tag.