Permaculture Veggie Tower. A living wall of these would be great! A worm tower, keyhole garden, wicking beds, vertical gardening, and hardscaping all in one. This is a great design for urban folk. I would increase the diameter to 3ft.
Stone path to a hidden firepit
Firepit and landscape
DIY Fire pit
fire pit--love this!!!
A Swingset Firepit | 32 Outrageously Fun Things You'll Want In Your Backyard This Summer