I actually made this about five years ago but thought I'd share. I liked carrying my MP3 around, but sometimes the earphones' cord was a bit excessive, catching on things as I walked by, or I'd accidentally step on it when crouching to pick up something. At the time they were my only earphones as well, so I used them constantly and didn't like continually winding and unwinding it from a rubber band when I needed it, so it would just end up a tangled mess.
I had a bubblegum container that had been laying around prior to my dilemma, which I had kept hold of, thinking it may come in use one day. Well yes, that day was upon me.
I had only seen one other person on the internet use the exact same container for the exact same purpose (for the life of me I can't remember the site). The only exception being that it was strictly for carrying said earphones. If you wanted to use them, you had to take them out entirely, which still left the issue of duking it out with the long cord, and the container is left as wasted space in your pocket or bag.
I wanted mine to stay together, so that my earphones could be used and somewhat contained at the same time.
Step 1: Materials
*Two beads (one shown)
*Two rubber bands (one shown)
*Drill (not shown)
Step 2: How It's Done
-Drill a whole in the lid and bottom of the container. Make sure the whole is big enough for the cord to go through.
-Instert a rubber band through each bead (the beads are to hold the auxiliary bit in place at the bottom of the container).
-Thread the aux. through the top whole.
-Loop the first bead onto the cord just a bit above the aux., and then feed the input through the whole in the top of the container (this part will be a little tricky).
-Once through, loop the final bead around the aux.
Step 3: Almost Done.
Now to contain the mess on top.
The paperclip helps adjust how much cord I need.
-Adjust for desired cord length, clip, and tuck the remainder of the cord into the container (be sure the paperclip is inside the container to keep the cord from slipping through the whole).
Step 4: Done
(Hopefully) pretty straightforward.
I'm sure there could've been many other ways to go about this, but it was fun doing this project with what I had available at the time.