Dry-Laid Flagstone Durable and easy to maintain, flagstone is available in a broad range of types and colors that complement a variety of architectural styles. It is especially well-suited to a rustic, hand-hewn look. Handpick stones from the supplier to ensure a good color match.
I would like to do something similar, but with urbanite (broken concrete chunks) that can be mowed over. Would conserve water and be a nice area for seating. Could surround with native plants/shrubs/trees.
"Permeable patios and walkways require less maintenance and can add to the sensory experience of seeing, smelling and walking through your garden," Aoyagi says. "Striking permeable materials include criba, mulch, gravel, decomposed granite, and reclaimed tumbled glass." oooh! tumbled glass...love that idea