Today on the First 40 Miles, SKETCH: Art on the Trail.  If you’re inspired by purple mountains majesty, we’ll give you a few reasons why you should take the time to sketch what you see.  Plus, on today’s Top 5 List we’ve put together a two ounce packing list for your artistic adventures.  On the SUMMIT Gear Review, an ultralight way to liven up your plein air sketches with vibrant watercolors.  Then on the Backpack Hack of the Week, an entire watercolor palette that weighs less than the toothpaste you put on your toothbrush this morning.