My daughter made this Birkat HaIlanot, Blessing on the trees, which is said starting in the Jewish month of Nissan, in school one year. I thought it was a cute and simple idea and so I am sharing it here.
Basically all thats needed is the blessing on the trees and allow the children to decorate it as they wish. I am not going to go into a treatise about the blessing. This is really a simple project and the image pretty much tells it all.