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!
Here is another idea of creating the planter for the garden in the but this one is big. You can see how reshaping the wood pallets can turn them into awesome items for There is no need to paint them as they look amazing in their actual color.