There's your linen closet, your storage closet, your utilities closet, your shoe closet, your board game closet, your closet with a secret passage in the back, your closet for monsters -- although it's pretty likely that those are all the same closet, if you've got a small apartment. (At least the monster can occupy himself with Monopoly while waiting to jump out and scare you.) Let's take a look at some storage tips for all those other odds n' ends that end up inside.
From Pinterest (original source unknown), a clever hanger to neatly hang your scarves and pashminas. Edit!: sharp-eyed reader Nessabirdie let me know in the comments that this hanger is available from The Container Store. Well done, Nessa! Thank you!
Better Homes and Gardens has a good one: use shower curtain rings to hang your purses, making them easy to slide around to find the one that matches your outfit.
Keep all your sheet sets as organized as Martha's by folding them and putting them inside one of the set's pillowcases. (And if you need a tutorial on folding a fitted sheet, check out this video from Lifehacker.) (Via Storage and Glee.)
Finally, if your closet likes to fill up with old electronics and computer junk as much as mine does, take a look at this cord storage solution from Instructables (via Storage and Glee).