Danny Gregory advised us to divide our page into little squares and to create small close-up drawings. These squares are roughly 2x2" and a really fun and manageable way to be productive, because if you always carry your journal with you, the drawings can be done quickly and spontaneously throughout the day. I also try to remember to carry a small pocket watercolor set with me. My drawings are very simple and quite amateur, but adding a splash of color really spruces them up!