What do I use with these large decorative stones in a garden area?

I have an area along the driveway where we have rose of sharon and nothing else at the moment. We need to put something there along with the large decorative stones. Should I get small stones or something like pea gravel. It's going to be used in place of mulch because it just gets washed onto the driveway. Suggestions please. Thank you!

What do I use with these large decorative stones in a garden area?
A small rock garden would be ideal there. You can add a statue or a fountain or anything you like.