Several people have inquired about the HUGE backdrop we have constructed. As in many elementary schools we do not have a stage in our cafegymatorium. :-) I wanted to transform the space for performances to make it a more special experience. A member of a discussion list that I'm on suggested creating a backdrop from PVC pipes.
So with the help of a donation from our PTO I was able to buy the pipe and fittings. You need some special 4 and 5 way fittings that I could not find locally. Fortunately several places online (including Amazon.com) carry them.
Although the original poster suggested covering them with paper, we went with fabric. Our secretary is a seamstress super star and made them for us. With the help of our amazing custodian and coach it was put together and carefully set-up. We strapped it to a couple of ladders for support and set boxes of paper on the legs to hold it down. When the heating/cooling kicked on the curtains blew around a little bit!
Here's what it looked like at our last concert.
This was made with posterboard, glitter and paint. For our patriotic concert the curtains were put up in a slightly different arrangement and we draped plastic flags over the parts of the pipes that peeked through at the top where the curtains met.
I am not the creator of this instructable, but it is good stuff! With modifications this would work well for churches and VBS as well as other performance venues.