Have an empty wall? Cover it will slim mirrors, they are cheap and easy to hang. This will have all your guests talking, plus it really adds a lot to your room. These mirrors can be purchased at Target or Wal-Mart.
DIY Hanging Bed Canopy - Using $5 sheer white curtains from Target, removable wall hooks, and Christmas lights. Then I used clear tacks to make the curtains over head billowy. This really opened up the room, and is great for relaxing in the evening (:
DIY canopy: 2 curtain rods and 2 sets of LILL sheer curtains, (all from ikea). Mount one rod on the ceiling, and the other on the wall. "Swoop" to your liking. I finished it off with lights (also from Ikea), and a fluffy Ralph Lauren duvet, (thanks mom).