I read on a post somewhere (can't remember where), that someone was looking for a solution to not having a light in the cargo area. Yesterday I was at an Ace Hardware store, and I ran across this circular LED light than runs off batteries. It comes in silver or white, and is basically a ring, with LED lights inserted all the way around. Comes with adhesive pads on it for mounting, and cost $9.95. I got a silver one, and peeled off the backing on the adhesive strips last night, and pressed it into place on the plastic trim on the top-center, just inside the rear glass. Pressed the button, and it produces a LOT of pure, white light, making it really easy to see anything inside the cargo area. If anyone is interested in seeing what it looks like, PM me and let me know. I'll take some photos and either post them or send them to whoever is interested.
P.S. It's 87 degrees here right now, much hotter inside the car, I'm sure, and the adhesive on the light has already failed. Will have to get some industrial strength velcro and reattach it.