Hydrogen, oxygen, and carbon are the most essential life-sustaining atoms in the universe, and these depictions of them from Theodore Gray's book The Elements are stunning. They are featured on the covers of these three notebooks, each of which has a saddle-stitched binding and is a little bigger than 5 x 7 inches. Now you can tackle to-do lists, homework, and daydreaming ideas with a renewed sense of order and awe for the world around you.