There are few symbols in Zen Buddhism, and one of my favorite ones is the Enso. This simple shape--a circle--represents Zen Buddhism perfect.
logo -Enso Lotus - I love the Enso and this one is a favorite because it includes the Lotus flower. Symbolism of the Enso includes enlightenment. One symbolic meaning of the Lotus, related to Buddhism is fortune. This design is by Aaron Robinson.
Black And Red Koi Fish Enso Guys Inner Forearm Tattoo Mehr
Enso - maybe with one pine tree?
The Enso represents the fullness, simplicity, integrity and infinite body for perfect harmony, regularly used in the Zen tradition of Japanese Buddhism.