I prefer the stuff I use to be visible (I have open shelves in my kitchen and bathroom as well), and I like it to be part of the decoration. However, with the speed my collection is growing, I might run into trouble soon. If that time comes, I might invest in some more RIBBA shelves from IKEA, as I really like the way they look.
Nail polish (reds, greens, teals, blues, pinks, black/white/grey/silver):
Glitters, shimmers and stamping polish:
Swatches of all my polishes (except stamping and stripers):
Files, brushes, dotting tools, stamping plates, base and top coats (in the GODMORGON box from IKEA) and such. And screwed to that another shelf of nailpolish (brown/gold/yellow, nudes, violetts and stripers):
Inside the GODMORGON box:
Rhinestones, studs and glequins, sorted by size/form and colors: