More to explore:
25 Garden Bed Borders, Edging Ideas for Vegetable and Flower Beds. This concrete block idea is neat - especially if you paint the blocks pretty colors
cinder block garden
DIY Cinder-block sofa
decorated cement blocks
Do you HAVE? Green walls
concrete block benches
Cinder block planters (in corner garden in backyard?).
Strawberry plants in cinder blocks
Tips for growing strawberries
Use cinder blocks to line a bed, and you can plant flowers or strawberries in them.