Just received a dozen puck lights; these 12V LED light fixtures are the main lighting source inside the van.
The main advantage of these LED lights is their energy consumption; with about three watts per light, you can leave them on without worrying about a dead battery. While made in China, they seem to be of a fairly good quality and produce a lot of light. I chose a warm light version, but they also come in the cool light version. As an extra feature, a diffuse light panel will moderate the intense light beam.
I have three zones planned for the puck lights; 4 or 5 in the main hallway, three in the kitchen area and two above the desk at the Murphy bed. I might even install single units in some of the bigger closets.