Grab your earbuds by the center of the cable
Bend the two flaps in the center and feed the center of the cable through, push it to one side
Wrap the cable around
Take the end of the cable and put in one of the 4 arms on the side to secure it in place
Gif of use: http://imgur.com/a/SceeG
I am a Mechanical Engineering student at NJIT and I spend my free time designing and 3D printing.
My design philosophy is to design everything create without supports and to make the entire model 3d printable without external hardware.