The van's in the shop, so no pictures, but here's what we bought to replace the antiquated fluorescent fixtures in the penthouse top. I realize they're different than the picture in post 1, but this should offer alternatives.
We use high-power LED Flashlights as supplements to our lighting...variety of sizes/shapes lumens etc...as bright as we would ever need and an extremely cheap alternative...magnetic, hooks, can put just about anywhere in van, point anywhere (at night we point to PH ceiling and a nice reflective light is achieved)
'13 MDX 'BigBlackmobeebs'
'01 Lexus 430 LS 'Luxobeebs
'20 Tacoma TRD OR 'Tacobeebs'