Around 2004 or so my son and I used to live in a very small town in Kentucky (one stop light, three bars, five churches, and a monastery.) This town was my introduction to the south, it was quite an introduction. I discovered mountain folk weren't anything like most northerners expect, and at the same time, they seem to live up to their reputation and then some. It was a lot of fun.
So this town had a lot of history, and paranormal activity is normal there. My son and I lived in a project in this town. It had two, it had a lot of struggling families. We had sweet neighbors. We had get-togethers for cards and beer and things, and the kids all knew each other.
The buildings were two stories and my son and I lived in the ground floor. My son surprised me one morning by telling me he saw a blue light floating through his bedroom from the window to his open door and it floated right on to a door across from his, which was to a closet for the water heater. The light rattled the door knob, and floated back and out. This happened periodically, and maybe was not a relative of the family upstairs I don't know.
Along this time, I noticed a rocking sound like from a rocking chair about the same time every evening and around six in the morning, always in the same spot above the our living room. There would also be a little kid's playful running and giggling. No sound of talking, just the rocking and the giggling running kid and now and again an adult footfall. Like someone was living there, only it was empty.
I seriously thought there were squatters in that apartment, so I talked to the maintenance man about it. Mind you, I'd lived previously in a city where homeless people moved into empty apartments all the time. But that didn't happen in this town, so he looked at me kind of funny. He said they were going to start working on that apartment to get it ready for a move-in, so he'd check it out for signs of campers.
Well, the next week he saw me and told me no one had been in the place for about three months, it had dust all over and that was it! But he knew I was telling the truth because the people next door to that one upstairs said they hear the same thing.
Later on while visiting an older lady next door, I told her the story about the "family upstairs". She just laughed. She said a two story house used to be where our building is. She didn't know the particulars of the family. Then she asked me if that blue light thing was still hanging around. I said, "Oh you've seen the light thing!" She said "Yeah, it's been around for a while. No relation to the people upstairs though."