It's a bit fragile, so it's hard to travel with. It is attached to camera with double stick tape. Here are more detailed instructions:
"My idea was to use reflective silver paper on the interior of the tube so most of the light would exit the top of the tube. The tube looks like a small rectangular periscope.
Frosted Scotch Magic tape was used on the top outlet of the flash tube to defuse the light for even illumination.
The material I used for the tube was the silver mirror paper found on a wine bottle gift bag that cost $2.25. The tube was attached to the camera with Scotch tape.
The photos show that it works. The photo taken with the Canon Wide Converter WC-DC52 is under illuminated and the flash does not cover the whole 24mm shot, as would be expected. The shot can be corrected with PhotoShop levels, however. And it may be possible to use the Scotch tape more effectively to even out the flash and redesign the top of the tube for better light reflection.
For close-up shots, the tube eliminated the dark shadow caused by the LA-DC52c lens adapter. It would also be possible to construct a tube that went straight out from the camera to the edge of the lens adapter to bring the light closer to lens."
I also made one with a PEZ dispencer with the sliver paper inside, it is attached with velcrose (sp?), but it is much heaver and there is too much light leak with the velcrose, it's too far from the camera.