spray paint measuring tape and keep track of kids heights at different ages. Takes up no space and can move with you. I would paint the back side to mark so you can still see their height without having to remeasure your measuring tape.
Keep a secret stash of inappropriate pictures waiting for their birthday. This is totally inappropriate, and hilarious.--hahaha, definitely don't show anybody these pictures but would be so funny as a gift for their bday!
Kiwi Crate - They will deliver a box to your child each month. In each box are carefully designed and kid-tested projects, which cover a range of developmental areas and subjects, including art, science, and imaginative play.