I am certain that my old house was haunted. My mom would get mad at me if I mentioned it around my younger sister who was already scared to stay at home alone (she was 18). Each of us experienced something creepy. Sometimes alone, sometimes with others. Here are a few of them:
This happened to me a lot but I never brought it up because I didn't want to sound crazy. I am a very light sleeper. When I am awake, I'm awake. I don't get into that half asleep/dream state so that's how I knew it was real. I woke up in the middle of the night and heard a note being played on our piano. Most everyone in my family play the piano so I expected that one of them was downstairs. The weird thing was that it was just the same note being played over and over. Maybe my dad was tuning the piano in the middle of the night? So, I sat up in my bed to make sure I was hearing it. Then I walked and looked out my door. Everyone was asleep and I could hear it over and over. I would hear this one note resonating throughout the house every few months.
My mom and my sister had this happen to them. No one was at home besides them at the time. Our house had an open floor plan. So the living room was two stories tall. My parents' and brother's bedrooms were upstairs on one half and across a bridge was my sisters room and mine. Mom was downstairs and my sister was upstairs in her room. All of a sudden they each hear footsteps. They don't want to panic so they don't mention it to the other. Then again. My sister walks out on the balcony and my mom looks up at her to see if they had heard the same thing. They didn't say anything but ran out of the house. They had a neighbor come over and she heard the same sound.
Idk if anyone will get to this but I do have some more stories like these if there is any interest.