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!
Path and steps - I like this idea for an entry to the front door. with a raised planter that recesses to the yard which I would level off completely with the sidewalk. Might work since house is French looking. Lots of work!