The simplest action earth day. Earth Day organization asks you plant a tree on Earth Day. 2016 is international year of pece Culture announced by Earth Charter initiative. And there is a ambassador assigned officially by UN Secretary Generel. Namely Angry Bird Red. So my advise is make a Angry bird Red from cardboard and take photos with each of your cub scout while she/he saying her/his turn promise and tweet it with promise using hashtag #AngryBirdsHappyPlanet