Here is a confession: I read IKEA catalogs not just to discover new products, but also for entertainment. Their designers create pieces with the end use in mind, and their catalogs are often chock-full of small space solutions that can be executed with their products. Here are a few of my favorites.
Above: In apartments without enough closets, open storage can be a necessity. To avoid visual clutter, cover your open closet with a curtain and make it a feature, and not a bug.
You can do the same for storage above the kitchen cabinets, which can tend to get a little visually cluttered. All you need is a ceiling-mounted curtain rod to execute this cute above-cabinet solution.
Looking for extra places to store books? Wall-mounted shelves can go pretty much anywhere, even above the TV. (Just make sure they're securely affixed to the wall.) Above is one of the most budget-friendly wall-mounted shelving systems - the Algot.
IKEA's Lack shelf makes a great nightstand in a tiny bedroom—not only does it only take up a few inches of space, but it has multiple shelves for all kinds of storage. Here it's mounted in a corner and rises practically to the ceiling.
Floating furniture is an excellent choice for small spaces. It helps to open up the space visually, and in a pinch, you can store other things underneath. Above, a painted Ivar cabinet, spotted on Livet Hemma, mounts to the wall.
Looking to create a workspace in a small space? A wall-mounted desk takes up far less space than a traditional one, and can fit neatly into a tight corner (or the space under the stairs). Again, here's the Algot system at work.
Another way to fit a workspace into a small space is to tuck a desk in behind your sofa, as seen in this efficient Paris apartment.
In a tiny laundry room, take advantage of storage space on the wall, and behind the door.
No closet? Not enough closets? You can create a really generous one in the space behind your bed, using clothing racks and wall-mounted shelves, and then cover it all with a curtain. It's the walk-in closet that's been hiding in your bedroom all along.