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!
"The SV Mobile Performance Earphones features drivers with neodymium magnets, along with Munitio's Sound Flow System. The earphones themselves are made from anodized aluminum, and also includes an inline iOS microphone/remote control." - The Verge
When the two bedrooms in this sort of design are placed next to one another, there can be some sound transfer, so this may not be ideal if you have teenagers. Or if you do, be sure they have some good headphones.