Every year on our birthdays my dad would line the birthday boy up against the wall and put a mark where the top of the head reached. We would then put the day and the year beside it. Over the years in that house we developed a very meaningful collection of kids wall art. When we moved from that house day copied the heights on butcher paper and moved our growth history to the new house. The tradition continued until we felt we were too old to do it any more. I am sure if it was up to my parents we would have never stopped.