Wish I had good handwriting! ***Take a picture each year of the child's likes and favorite things and how tall the child is! (I would leave out the weight) present the pictures in a photo album to the child as they are leaving to college!
This would be an amazing art project to mark the years of a child's life, marriage, etc.: Buy the number in wood (or other material) and decoupage photos from that year all over the number and hang them as art work in your home.