I found what I think is a new e-Reading book light at Target this weekend. It's similar to the Kandle, but uses a different clip system, which seems to be more stable.
I've been playing with it for a few days and am impressed with the light weight, even dispersion of light, and the firm clip, so it doesn't flop around like traditional book lights. I'm most happy because it fits perfectly on my Opus - I've had a hard time finding a clip light, since the bezel is small.
Below are a couple pics, and I have more on my blog:
eBook-Lite