Steve sent in his DIY Camera kaleidoscope he made form some scrap aluminum tubing. It works, but there are still some issues with alignment and focusing. I wonder what would happen if the tubing was polished on the inside, or how about cutting some mirror in strips, or metallic paper? Camera kaleidoscope
Related:
HOW TO - Make your own kaleidoscope
http://blog.makezine.com/archive/2008/04/diy_camera_kaleidoscope.html