I'd like to get my hands on one of these to play with because it has a lot of features I like:

http://www.leevalley.com/garden/page.aspx?c=1&p=58277&cat=2,40731

The main battery pack is rechargeable with a dynamo crank. Can be run of of an external pack of 3 AA batteries...perfect for cold weather if you can keep the pack inside your clothes. Can be charged off of USB.

If the quality isn't horrible, the lights are bright enough and not too blue, seems like a versatile unit.