I've always loved the idea of marking our kids' height on something as they grow. I didn't want to do it on the door frame though. I came across this great idea on pinterest and loved it. It was very easy to do and pretty inexpensive too...$5 for the board, $3 for the paint pen, and I already had the stain for the book ledges. The tutorial on pinterest was super easy to follow. We haven't hung it up on the wall yet, but you can see what it looks like. I think it will be so fun to write on and use over the years.