I picked up a few of these rectangular LED lights at a Costco in
California.  Great for your campervan, or anywhere you need light and
are too lazy to run wires.

They are on sale, 2 for $10, INCLUDING AAA DURACELL BATTERIES! ,
heck, that's almost free!
(Same light is $15 for 1 at Camping World)

The have 2 brightness settings, and the entire LED array swivels so
you can aim the light where you need it.  They can be installed with
included velcro, or you can screw the flush mounting bracket into a
wall/cabinet then the fixture snap locks onto the mounting bracket.

Great addition for your Vanagon...

photos here;
http://i275.photobucket.com/albums/jj285/baboonia/vanagon/IMG_6829.jpg
http://i275.photobucket.com/albums/jj285/baboonia/vanagon/IMG_6830.jpg