I don't know if you have the same problem with the EarPods that Apple ships with the iPhone 5, but I find that a lot of times the friction of the cable on my shirt has a tendency to pull the pods out of my ears. It's annoying, especially when I'm in the middle of a phone call and the right side of the cable -- the one with the mic -- decides to flop down on the front of my shirt. Well, there's a product to help out with that problem. Klingg (US$19.95) is a tiny and very useful earphone magnet that holds the main cable in place on your clothing, keeping the EarPods from popping out.
Klingg comes in a variety of color combinations to please just about anyone a