I've lost the original to this thread, but I'll follow-up anyway. When I'm at
demonstrations I use the 2"PVC in a bucket system, but at home it's a bit more
of a woodworking project. See http://mike.vorefamily.net/thewoodenradio and
a picture is visible.

--
Mike Vore
http://www.OhMyWoodness.com
http://mike.vorefamily.net/twr