CINDER BLOCK STAIRS...use dirt and some "step-able" plants for a greener area! I'd also add some decking wood with a dark stain to the tops of each step and paint the bricks.
Rubber door mats also work as pretty molds for concrete stepping stones. | 41 Cheap And Easy Backyard DIYs You Must Do This Summer
I love the idea of moss or grass growing between garden stones
DIY Lace Like Stepping Stones - diy craft crafts easy crafts (follow the pictures step-by-step) Garden Path Ideas
Whoa! I am totally trying this! Hypertufa Design Using Stencils