We’re mounting 4 of these gooseneck 12V LED lamps on the walls of the van, to provide directed task light.

I’m not 100% sure about the quality. One of them has a slightly wobbly plate around the LED, that I can’t figure out how to tighten up. But apart from that, them seem solid.

£19 each from Jackson’s Leisure Supplies (we used their eBay store).