Creeping thyme flowing over the rockery.

This variety (Thymus sarpyllum) can be used in medicine and cooking along with the common thyme (T. vulgaris) which we also have growing semi-wild in many places in the garden.

One of our favorite uses for the fresh or dried leaves is to brew a very tasty tea. Not only is it tasty but also has health related activity. Check out thymol in Wikipedia.