Storage space is always at a premium, especially in a small apartment, but there are a few things that are worth keeping on hand. Apartment Therapy details the items that you should always have in your closet.
Emergency supplies are a must, in case of a storm or other emergency. This includes water, flashlights and batteries, first aid supplies, and some cash. You may also want to add matches and candles to supplement your flashlights and non-perishable food items are another good idea.
Toilet paper is something you never want to run out of, so buying and keeping on hand that giant bulk package from Costco is worth the closet real estate.
Keeping an extra quart of any paint colors you've used in your apartment is a must for the inevitable touch-ups or color matches.
Extra sheets are another good idea to have in the closet for unexpected guests, or if a pet or child has an accident.
Finally, especially with the holidays approaching, it's never a bad idea to have a pre-wrapped generic gift around to give to anyone who drops by with an unexpected gift so you don't find yourself empty-handed.