Pallet Planter with Terracotta Pots . with some hose clamps and screws to secure the pots, this old pallet has been upcycled into a feature vertical garden. Love it! For more inspiration, see 20 Creative Ways to Upcycle Pallets in Your Garden @
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!