I'm looking for creative ideas for organizing a bathroom "medicine" cabinet. The depth of the shelves is only 3.5 inches.
The shallow shelves in my bathroom over-the-sink cabinet-with-mirrors-on-front thing are getting cluttered. (I put "medicine" in quotes because I store the medicines in different cool and not-humid room, so no need to organize pill bottles or bandaids!) I'd like to take advantage of the vertical space by storing things upright instead of horizontally, including heavy things like hairbrushes as well as less hefty items like electric toothbrush heads, tweezers, nail clippers, nail files, tubes of toothpaste, spare razor blades, etc. A big heavy cup-like thing will work for the hairbrush, I guess, with some smaller cups or bowls to corral the other stuff? Or something with cubby holes? (I'm a huge sucker for cubby holes.)
I've also got some hair things to wrangle, like ponytail holders, large barrettes, and octopus clips.
I've looked at some bathroom, office, and kitchen organizing stuff, but my 3.5-inch shelf-depth excludes a lot of otherwise promising containers. I've seen a bunch of keen magnetic organizing accessories online, but our cabinet doesn't have a metal back—though I could possibly put one in.
I'd really like a clever, quirky, cute-looking (and cheap) up-cycling deal, but I'm also willing to buy something that's right for my needs. I'm looking forward to your ideas!