Growth Chart! $35 - fabric growth chart (do one for each kid and give to them when they grow up)
oversize ruler growth chart- vinyl decal. perfect first birthday present- you supply the board.
diy growth chart This would be great since we are renters now. We had a place on a door frame that we did this in our home in Idaho. It was a sad moment for me when I realized that was something which had to be left behind.