Pinwheel Garden?

Tennessee's Pinwheel Garden from volunteertv.com

When we read that Tennessee first lady Crissy Haslam had planted a pinwheel garden at the Capitol to help start Child Abuse Prevention Month, we had visions of a gorgeous multi-colored bed shaped like a pinwheel and planted to evoke the three-dimensionality of those colorful whirligigs.  Alas, it turns out that a pinwheel garden is a space full of actual pinwheels. 

Certainly we don't want to take anything away from such a worthy cause as preventing child abuse.  A little research reveals that these pinwheel gardens are going up all over the United States in an effort to raise awareness of this terrible situation.

As a gardener, though, doesn't this concept spark your imagination?  How would you design a pinwheel garden of living plants?