Picture Frames: Keep 'em empty

I'm drawn to the design aesthetic of hanging multiple, empty picture frames on the wall in an artsy arrangement.  Its a great way to dress up blank wall space without overdoing it.  Small, big, oval or rectangular... you can mix and match to create your desired look.

Painting mismatching frames the same color can bring cohesiveness to decor:

Blueprint Magazine

Using multiple frames throughout a room can also be really fun:

Real Simple

My favorite are these ornate frames spray painted in super bright colors:

decor8 blog

If you can't scrounge up some old frames or don't want to put multiple holes in your wall, you can always rely on vinyl art:

The Sticker Hut