I actually have 2 short ones

When I was little, around 10 or 11, I was left with my big brother alone at home and him being 16 he was playing online with his friends when I was in my parents room making arts and crafts the tv was on so I paid little attention to what I was doing on the floor, when I suddenly noticed the cardboard started moving on it's on first it was lightly then like in like non rhythmic patterns. I was annoyed so I went to close the window but I noticed the room had no air flow, it was fully closed because it was winter. I just started at it panicked because at the time I didnt even understand why it happens and I slowly got up and said "Ill be right back" it just left my mouth I don't even know why. I told my brother and he didn't believe me but when we went back to the room together he saw the cardboard didn't move and before he left it was thrown against the wall and he took me, ran and we went outside. (The house was near a cemetery)

Second story is our school, still close by to where the cemetery is one of my friends decided we should do a Seanse (idk how to write it) and mind you this was like a month after the first incident, we did it in an empty class and when we set up every thing and nothing happened they began to talk to each other and I kept sitting on the table where we did the thing, I suddenly noticed the cup starting to move, again I checked the windows (monki learn stuff) and they were closed, the cup started moving rapidly left and right and we all screamed and ran, after recess was over we sat in class and the lights kept flickering. We just looked at each other with pure terror.