12. Create an area of raked gravel
For a more traditional zen garden feel, see if your space would accommodate a small area of raked gravel. Gravel garden ideas are a well-known element of zen gardens and are designed to aid meditation as well as creating a striking feature that looks sophisticated and calming.
White gravel in particular looks great because it creates the illusion of water and is common in Karesansui, or dry landscape zen gardens.