Make yourself a durable, weather tested bench with concrete blocks, PT lumber, a nice cushion (all on sale, of course).... Bet you could Velcro tab a backseat cushion vs. using pillows!) Cheap .. ?? not sure about the cost. Price locally for supplies.
a concrete block retaining wall is the perfect solution to control erosion, to eliminate a hard-to-mow slope, to add a planting bed, or to level an ideal patio area. these systems are easy to install, durable, reasonably priced and available in a variety of colors and textures. this article shows you how to install one in a weekend.