Region 11 make a Vlieseline Phone Covers!
Hrere's a photo from Region 11 Young Quilters in a recent workshop creating mobile and ipod covers. They used an interlining called Style-Vil which is perfect to protect Iphones and Mp3 players.
You can find out more about Stye-Vil by Vlieseline on their website and see project instructions to have a go at home!
http://www.vlieseline.com/Creations/Mobile-phone-cover
