Paint storage stops being a trivial problem at about the point a collection passes thirty pots, which happens faster than anyone expects. The two things that go wrong are the same for everyone: you cannot find the colour you want, and pots at the back go unnoticed until the paint in them has thickened past use. Both are solved by storage that shows you what you own.
Why pot shape decides the rack
Hobby paint comes in flip-top pots and in dropper bottles, and they are different diameters and different heights. A rack drilled for one will not hold the other properly, and a mixed collection needs either a mixed rack or two. This is the single most common purchasing mistake in this category: a rack bought on looks that turns out to fit two thirds of a collection. Checking the hole diameter against the pots you actually own is unglamorous and saves buying twice.
Visible storage against drawers
A stepped rack shows every label at once, which is why most painters end up with one: finding a colour becomes instant and you notice the pots you have not touched in a year. Drawers hold far more in the same footprint and hide everything, which is fine for a deep collection you index some other way and poor for the working set. The usual arrangement that emerges is a rack for the colours in current use and a drawer or box for the rest, and it works because it matches how a collection is actually used.
Keeping paint usable
Acrylic hobby paint dries out through the lid seal rather than through the pot, so the enemies are an ageing seal, a lid left ajar and paint crusted on the rim that stops it closing. Wiping the rim before closing costs nothing and adds years. Storing pots upright keeps the paint off the seal; storing dropper bottles upright stops the nozzle clogging. Temperature matters less than people think, but a rack on a radiator shelf or a windowsill in direct sun is worth moving.
Questions people ask about miniature paint storage
What is the best way to store hobby paint?
A visible rack for the colours in current use and a box or drawer for the rest. Being able to see labels is what stops pots being forgotten until they dry out.
Will a paint rack fit any pot?
No. Flip-top pots and dropper bottles differ in diameter and height, so a rack drilled for one often will not hold the other. Check against the pots you own.
Why does my paint dry out in the pot?
Almost always the lid seal, helped by paint crusted on the rim stopping it closing properly. Wiping the rim before you close it makes a large difference.