There were times, in college, late at night, when I was restless. When more than mental activity was called for. When chocolate was called for. And so, while all the lovely ladies of my dorm slumbered, I would take myself off to our little kitchen and bake... cookies, brownies, many and many. All the while, tasting the chocolate and dough and sorting through whatever happened to be on the mental docket that night. It was cathartic. And in the morning the girls woke to fresh-baked cookies.
It always made me feel like the Proverbs 31 wife, burning her lamps at night, working to provide for those around her. "She also rises while it is yet night, and provides food for her household...". If you're stressed and can't sleep, I recommend night baking.