After posting on the ghost stories thread, I went to talk about it with my sister and she reminded me of more stories.

My sister came back to sg for a few months while my family was still overseas and she lived at a family friend's place. Boy, did a lot of shit happen.

One night, she was listening to the radio when she saw the volume knob start turning by itself and the volume went up and down, up and down.

Another time, she was in the kitchen and heard the shower curtain continuously opening and closing very quickly. She was alone at home.

On another night when she was alone at home, she heard someone from her room calling her, "psst psst"