Looking for a modern artsy stage design? Mark Yakey at Manchester Christian Church knocked another one out of the park with this design. The wavy panels were made from Masonite. You could make them with plywood or foam, though (foam would be lighter to hang). They got the paper lanterns from Ikea, though paperlanternstore.com is a great source for inexpensive paper lanterns.
Check out this Picasa profile for more stage designs from Manchester Christian Church.