While the above photos show a series of spirals, other images capture what appear to be a cluster of grapes and a star.
With all those speeches, who can blame her?
Clinton is not the first political figure to kill time and curb boredom with a little harmless doodling. As the Atlantic pointed out in 2006, plenty of American presidents -- including Bill Clinton -- loved to doodle. John F. Kennedy preferred geometric figures while Ronald Reagan liked cute cartoons.
Here's Andrew Jackson's alligator doodle from 1833: