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.
This is the perfect costume for the Mad Hatter. It is very classical but elaborate in a sense. It's very classical and quirky. The costume completely matches the Mad Hatter's craziness and comical nature.