Zentangle drawing

The Zentangle Method is an easy-to-learn, relaxing, and fun way to create beautiful images by drawing structured patterns. We call these patterns, tangles. ... These simple shapes are the "Elemental Strokes" in all Zentangle art. These patterns are drawn on small pieces of paper called "tiles."
Zentangle is an American method for drawing, which not only promotes concentration and creativity but at the same time increases personal well-being. Zentangle was invented by a monk named Rick Roberts and an artist named Maria Thomas. With Zentangle they created a combination of meditation and art.