If you don't know what a zentangle is, it's a method of creating beautiful images from repetitave patterns. You can make them inside of shapes or freeform like I did. In some of my work I don't like to be restricted. All you need to get started is: medium weight paper, pencil and a permanent fine line pen. You can also add color or shading. There are no rules the choice is yours.
I find that it increases focas, concentration and well being.