By being backed with a rectangle of color and even a border or frame, this look goes from something small to large wall art in a second. It's an easy way to fill a large chunk of space on the cheap. If you're not into the frames, you could even display them on short shelves like these folks did and still implement the colored background and outer frame to keep things focused visually.
As an added bonus, to paint a shape this small on your wall, you could easily pick up one of the premixed sample containers at your local hardware store for right around $3 and not have a bulky can of paint hiding out in your closet for months and months. Win-win for everyone!
Related: Roundup: 6 Ways to Display Records!
Image: Sarah Rae Trover