Travel sketching makes your boring commune time fun and allows you to perceive the world around you in a different perspective as well. You can do it too. Remember how you drew when you were a kid. 
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Found my old travel journal accidentally and saw this sketch which was drawn in 2000 (yeap, that long ago.) when I traveled to Bali with gal pals the first time. We were somewhere in Gunung Batur watching Batur Lake at a coffee shop and watching how the local vendors doing business with tourists as well.
OM ARTS - Yoga. Art. Reiki. Meditations 