My small contribution, which has led to some continued interest in the paranormal.
We moved house when I was 10. Bigger house, two story, built in the late 40's IIRC. Early on I,at least, would hear my name called and it wasn't my mom. (Went and asked.) My younger brother complained of seeing faces on the wall at night. The biggie occurred one early evening as I went up stairs to the second floor, the stair way left the main floor and went up to a landing, turned right and went up another 7-8 steps. At the top there was a hall with entrances to the bath, and my room on the left, entrances to my folks room and younger sister's room on the right.
I was about half way up from the landing to 2nd floor level when something white and irregularly shaped came out of my folks room. It might have been an arm given the height but had no real shape aside from an irregular length. There was no one else from the family up stairs. I don't think my feet touched the steps on the way back down, I went through the house to the TV room in the back of the first floor. I stopped next to my mom and she said, "you are just white." I don't remember if she said any more and I blurted out that an arm had come out of their (mom & dad's) bedroom. To which my dad said,"Was it a man's or woman's arm?" I replied, "It was white!" I had never been so scared, never saw it again and when ever I went up stairs in the evening I had to screw up my courage and make sure the light in the up stairs hall was on. If the story ended here it probably wouldn't mean much.
Many times we, as a family, would leave the house in the evening and my dad would see and complain that the attic light was left on by somebody. The attic stairs were accessed through a door in their bedroom BTW. One evening, as we were all called down stairs to get in the car and go somewhere, I made a point to be the last down. I turned off the attic light, which had a wall mounted toggle switch that wasn't the least bit worn out, having a firm click. I joined the family and as we pulled in front of the house in the car, my dad complained that the light in the attic was on. It was, I looked for myself and reported to my dad that I had turned the light off before we left. The subject of ghosts came up, several times, but being a religious family, there was no further discussion. One of the times I was visiting town long after my folks had moved again I went by that house at night, the light was on.;)