Zen doodles

I learned a new way to doodle called Zentangle.
Zentangle® is an easy to learn method of creating beautiful images from repetitive patterns. This fun and relaxing activity increases focus and releases creativity.It was developed by Maria Thomas and Rick Roberts,
learn more at the official Zentangle site. 
I found it quite meditative. I made up my own patterns, and found it passed the time during lectures, and travelling.

Here is my first effort:

Linda Farmer's website Tangle Patterns, is a wonderful resource for patterns.