Had to check that Vallejo size bottles would fit, and aside from Metal Color and similar you're fine
If I had a permanent setup then I would be looking at something like this
- scroll down to the father nifty paint drawer things. Nail polish racks would work just as well but I want a 'proper' setup one day!
Unfortunately however I don't have a permanent space anymore, so I make do. Previously my paints were everywhere. The bottom drawer of a bedside table, an old shortbread tin, in a box under a bedroom table... It wasn't exactly organised!
A while back I purchased a two cases similar to these
off eBay - cheap and cheerful, but they do the job. I had to cut a mesh pocket out of the inside, and also discovered that two rows have slightly larger/smaller holes (too loose and too tight, respectively), but in future I would simply make sure that all the holes were uniform. When I next open the wardrobe I'll get a photo for you.
Citadel paints I will eventually transfer into dropper bottles, but for now they're still in the bottom drawer with all the other oversized bottles (VMetalC, thinners, enamels, pigments etc)
Also, if I may...