Here is a chart I created called Health Habits Chart to help make tracking the health habits more fun. My son put his on the fridge. He used washable markers to fill in the boxes. The colors were not color coded, but whatever he felt like at the time. By the time he was finished, most of it was simple orange.
At round table, it was suggested that you could laminate the charts and turn them into place mats. Then while the boys are eating, they can color in the appropriate square.