
Structural pvc packaging doubles as a sun-visor. Ecobrands approached Phelan Associates with a difficult brief: keep their UV meter pack out of the waste stream. Because of its rigidity, they created the blister pack in the form of a sun-visor, with reversible graphics. The user simply opens the pack, reverses the graphics and wears it.
Reference:
http://www.phelanassociates.com/dual_use_packaging.htm