We have worked with hi tech materials company PVAXX Research and Development Ltd and Motorola to create a mobile telephone case or cover that when discarded can simply be placed in compost in such a way that, just weeks later, the case will begin to disintegrate and turn into a flower.

http://www.wgaalumni.co.uk/enetwork/issue10/inprint.html

http://www.paramountzone.com/fcatcher.htm