I think this all the time. Try going in pitch black with a picher of water, a flashlight, and a bowl. As you pour the water in to the bowl shine the flashlight across the water. It will move sightly with the light.
Baby picture each month with stats ~ have pics of them, maybe I have the stats written down. This would be a great way to display it. - I just like the idea of a monthly baby pic like this: holding in front of mom - Kiddos at Home