Mrs MB worked on a ward a few years back and it wasn’t always the most busy on a night shift so when quiet they’d take it in turns to get an hour or two shut eye in the office. There were a lot of stories from nurses on the ward of weird happenings in the office the more extreme saying they’d been woken up being chocked. Mrs MB experienced some stuff in that room, nowt as weird as yours, and how much of that was down to the idea being planted in the brain we will never know.
I personally don’t believe in ghosts but have seen/heard the odd weird thing that could be explained away but the rationale explanation for what happened doesn’t match the situation … so who knows. My in-laws used to live in a house and they’d have music and stuff playing when they got home and other stuff like lights and noises - it was only that one house never before or after. It certainly appealing to think there is something after we’ve gone.