My daughter loves listening to music and has a pretty large selection of Christian CDs. A few years ago we got her an mp3 player so she could listen to her music on long car rides which is pretty often since we live about 2 hours from any major city. It has been a huge blessing for her to be able to listen to her own music, especially since she hates listening to what I like to listen to, which is talk radio!
As she has gotten older she has started to want to use her mp3 player outside as well as in the car. This has been awkward for her since she hates wearing jeans and doesn't have any pants with pockets to put the player in or hook it to while she is playing. Her solution was to run around with it in her hand which has caused her to go through a few sets of headphones as she tugs the wires out while running and playing with it.
So my husband came up with a solution. He made a holder for the mp3 player that attaches to her wrist. Now she can run and play and keep her hands free while she sings at the top of her lungs. It's great!