I read this thread and thought it was a great idea, but really had no plans to make the addition.
Well, I was at Lowes (LOVE THE LOWES!) and saw the "Sylvania Dimmable White DOT-it Self-Adhesive Bright White LED Light" for $6.95, so I decided to give it a whirl.
The light came with double sided stick tape and a velcro circle. I decided to do some "belt and suspenders" action and use the CD and the velcro. I double side stuck the light to the cd, then I put the velcro (the hook side) on the back of the cd. I then proceeded to stick the CD into that back plastic piece as instructed. I find that the velcro keeps it from sliding and the cd keeps it from falling.
Teamwork I tell ya! Thanks for the idea, the light is a very welcome addition