Protea pudens x longifolia Delicate pink flowers produced in abundance make this lovely shrub glow in winter. Suitable for cut flowers, it can be grown in pots and containers (with Australian native potting mix)
DIY - Homemade Gabion wall ie rocks encased in wire baskets and used as a retaining wall - creates a dramatic feature in a garden. No directions on link. Nice someone figured out how to landscape with river rock. I swear they grow!
Enhancing Walls - Picking Materials for Boundaries on HGTV. Planting in crevices, ex. these pockets of soil at the top or on the face of a wall. Limited water will be available to them, however, so choose species that can flourish in dry conditions.