Used to use a Plano for my art supplies and used one for stage makeup for our University drama group.
All the slots seemed to confuse the actors, though, and nothing ever went back in place. I never saw what was so hard about a tier for your eyes, a tier for your lips, etc…but they were an easily confused sort.
I would like to point out that I did not resurrect this thread. There were two posts between mine and the the last one from 2010. One of them had a link to some cool nail polish storage ideas. Not sure why it was deleted. I came back to look at it again and now it’s not there.
My wife (a nail blogger) has 3 helmers for nailpolish so far.