Simply use the basic knot you’d use to make friendship bracelets to wrap the main cord and each of the individual earbud cords. To make them even more tangle-proof, wrap plastic coated twist ties inside with the cord.
10 DIY Projects for Girls - Pretty Designs Teen Crafts Ideas and DIY Projects for Teens and Tweens - DIY Embroidery Headphones fun project for teens: Should you absolutely love arts and crafts you'll will love this website!
I love you clothes pins: Write a message with a FINE POINT sharpie so it doesn't smear. Write "I love you" on a paper. Cut it out, and hot glue it to the clothes pin end. Would be cute for a care package!