What you could always do if you have no use for them is start hiding them in random places all over the school. Not all at once and not right away. Maybe in a few weeks casually stash one in the lobby and then in a few more weeks leave another in the cafeteria. Make sure no one sees you do it and do it sporadically so there's no pattern. I don't know how many you have but try to make them last all school year. 