A simple wood ladder or stepladder = InstaShelves! Take 20 minutes to pretty it up with a couple coats of spray paint or leave it bare and watch "New Girl" instead. (No judgment.)
Not all manufactured storage products resemble Tupperware containers for giants. See: this sleek, practical option from Duravit.
Genius: A vanity on wheels with a magnifying mirror, plenty of storage and a slim profile that makes it easy to squeeze next to a desk or bathroom counter. Buy it from PB Teen without shame.