I got a cardboard box from our refrigerator and some green and white paint for this.
I used the green paint to cover the one side of the box. For the top layer of paint i mixed some green with white, to lighten it up and used some flower wall stickers we had as stencils.
For the other side i painted the first coat with white paint. I made a lighter green for the top. It is a great color, but i created it by accident! I also used this shade for our bedroom lamps make over. I'll make an instructable for those too!