Sometimes you just need a mindless break in order to become mindful. Or just to take a breather. I began to color during an art-slash-spiritual retreat, and sitting with a group of people listening to music, lights dimmed, but enough to see the papers and the colors of the pencils was transcendental. It was soothing and calming, and there is no such thing as a mistake on a coloring sheet. You can find a variety in the dollar section at Target or the Dollar store. My most recent acquisition – the Celtic coloring book – was from a bargain store for $1.99. Well worth it.
Give it a try and let me know how it works out for you. Please add any other suggestions in the comments below.