Here is a cute one: https://www.hometalk.com/5460257/how-to-make-cinder-block-vertical-planter
Just lay them on the floor in whatever design pleases your eye, fill with soil/compost and plant up. Enjoy......Use one or more. Build a low dividing or boundary wall around a patio. Make it traditional or Modern, the choice really is yours........Have fun and enjoy the process.