• If your landlord allows you to install shelves (or if they’re already installed), that’s a good way to display pictures, artwork, and other items. This does require making a few holes in the wall, but not nearly as many as if you mounted each piece individually. Shelving also allows you to rotate displays.
• You’re probably not allowed to paint the walls, but no one’s stopping you from painting your furniture! A new coat of paint on a table, dresser, or bed can bring the pop of color you’ve been craving.
• Ugly carpet or damaged wood/linoleum can be covered with a tasteful rug. Adds color and style to an otherwise dull apartment.
• Make use of bookcases because they are great for storing a variety of items and require no hole-making installation. You can even make a coat hanger out of a tall bookshelf by taking out the top shelves and installing hooks. Pictures and artwork can also be displayed on bookshelves, as well as dressers, desks, and armoires.
• Add curtains and valances to the windows using spring-rods that don’t have to be screwed in.
• Easels are another good way to display pictures without damaging the walls.
• Hanging tools that don’t cause as much damage as nails: 3M hanging products, putty, tacks, tape, Velcro

Find the full article and more photos at http://howtobuildit.org/2013/10/09/tips-for-decorate-rental-spaces/2/.