After I saw the video that HCH introduced us to, I thought I would give it a shot. It took me all of 10 minutes and $3.95 to make. It's extremely bright and is much more "fail safe" than the true Luminock. Sorry the picture isn't real clear it's off my phone but you get the idea. I totally recommend giving this a shot.

Here is the link from HCH's thread.
http://www.youtube.com/watch?v=hMqLT-4ezzk