You like bread, right? You like the smell of baking bread. You like the taste of a fresh out of the oven loaf. You always wanted to learn to make your own bread ... here's your chance.
Pick a bread recipe. Any recipe, although I suggest a simple water/flour/yeast/salt version. If you mix it between your breakfast and "going to work" in your home office, you can call that your commute time. After it proofs for a bit, you punch it down for the first time during your morning break. Form it into a loaf during your lunch break, and pop it into the oven during your afternoon break.By the time you've finished work for the day, it'll be cool enough to cut into and eat.