This light idea was put together a few video trips ago by Chris Beare and works fantastic. The rechargeable 1 million candlepower spotlight($9.97) can be found at any Lowes or online here http://www.lowes.com/lowes/lkn?action=productDetail&lpage=none&productId=227293-50584-FT-SL-01 The plastic bowl is some cheap Glad... bowls that come in a pack of 4 I think for a few bucks that fit perfectly on the front of the light and secured with some tape. Inside the bowl at the front is a small round cutout piece of a Walmart bag to difuse the "spotlight" with the sides of the bowl left clear. 2 or 3 of these work fantastic! http://www.cavediggers.com
This video http://www.hdhathomes.com/tours/601_tourb.html was filmed using these lights and a Aiptek A-HD+ Camera......I have more footage I will post soon that was shot using these same lights but filmed with a MinoHD which did even better in lowlight than the Aiptek.