I like the idea of the wood like fence. You could have one pannel for every child in your classroom and then use it as a growth chart for toddlers. When the child moves up or leaves the centre you can give it to the parents. Use Pallet wood.
*** Ombre fire place wall, stucco or paint, maybe with high gloss tile mantel and cement bench *** DIY: painted ombré wall, smoother degrade with Wagner sprayer, PUISTOLASSA: DIY: liukuvärimaalattu seinä