I found a GREAT LED light bar for use around the camper.
This light is very well built and it has very good brightness it would be perfect for lighting the cabin or for use as under cabinet lighting it would even be great for use as a replacement for florescent lights.
It comes in a "warm" white and a "cool" white version, I chose the "Warm" white and the light has a very pleasant yellow hue. It also has a very sturdy in-line switch.
These lights operate off of 5v USB power so you will need either a 12v USB adapter or you could operate this off of a USB battery pack.
This light would be an excellent choice for reducing your battery usage during boon docking.