I had some left over gray spray paint so I went to town.
I had the gray frames on the wall first and it still needed something more. I ran across this book of cool prints at Anthropologie. It was on sale for $9.95 with an additional 50% off totaling around $5.
I picked up these frames at the dollar store and threw a little paint on them.
Here's how it turned out:
Total project cost (excluding the paint because I already had it): $12