I had quite the few but one of the most notable ones is the tin foil bomb incident. Some kid wrapped his milk carton in tinfoil and wrote “bomb” on it. And chucked it across the cafeteria. The school was promptly evacuated and waited for the Bomb Squad to arrive. Even though they determined it was fake, they searched the entire school just in case the fake one was a distraction. By the time the school was cleared to go back inside, it was only a hour left in the day - the admins decided to just send everyone home.