For my personal journal, I use one or two pages per day, since I like to leave myself room to write, doodle, and scrapbook. On the left of the daily spread page, each droplet represents one 40 oz bottle of water. B stands for brushing my teeth in the morning and at night, f stands for flossing daily, and s is for morning and night skincare. I use a / to denote morning and \ to denote night, so if it shows an X, I have met my goal.
Let me know what you think by commenting below.