I have a few experiences to share.
The first story I'll share, is about hearing voices. I heard them twice in my life, once when I was about 5, and the other time when I was 12. Both times it was while I was in bed, and almost asleep. In that odd stage where your thoughts start turning into dreams, and you're almost asleep, but you can still hear what's going on around you... So yeah. I would be in that stage, and I would start hearing two voices. One mans voice, one womans voice. I couldn't tell you where they were in my room. They weren't right next to me, but they weren't far away. They weren't in my head, like thoughts... I remember how I described it to my brother when I was 5. I said it was like two tiny people sitting JUST in the inside of my ear, chatting away. The odd thing is, I have no idea what they were saying. They were talking so incredibly fast, that I couldn't understand anything. But their voices were perfectly clear. I have since learned through psychic mediums that spirits speak so fast that most people don't hear them. I have no idea who the man and woman are. I thought maybe guardian angels. *shrug*
The second and third story are things I've heard of through friends. One of them was regarding a Ouija Board. My friends Hillary and Stephanie said that they had MADE a Ouija Board one night out of cardboard because they didn't have one of their own. They used a plastic petri dish as their little thing to slide around the board. Anywho, I guess they were playing with it and it started freaking them out because they were getting really scary answers to things, and lights in the house started turning themselves on and off. So they took the Ouija Board outside by the side of the road and burned it. They stood there and watched it burn till it was out. Then they turned around to head back inside and burst back in flames.
The third story is from another friend, Melanie. She had a poltergeist in her house. It never hurt anyone, but it hurt the house. It would pick up knick knacks and hurtle them across the room into the wall. It would open and them slam shut the kitchen cabinets, etc... they called someone out to bless their house and get rid of the spirit, and it worked. No more problems since.
The fourth and last story I will share is one that my brother and I experienced a little bit together. My brother was in middle school, I was in elementary school. He got home before I did. I walked in the door, and my brother was sitting on the couch, the house completely quiet. No TV or anything. He just sat there, staring into space. I sat next to him and asked him what was wrong. He said that when he came home, he heard voices in the basement. They were laughing, talking, etc. One of the voices was that of our brother who had committed suicide only a few months earlier. The voices stopped before I came home, but it had completely freaked him out and he didn't want to move. He told me to go into the kitchen and look at what was on the fridge. We had one of those mini dry-erase boards magneted to the fridge so we could leave each other notes and whatnot. Someone had drawn a face on the dry-erase board. It was a profile, the face turned to the left. The guy had spiky hair, and his mouth was opened like he was screaming. It was scary, just the emotion that I got from the picture. I came back in and sat down next to my brother. Several years later, as a teenager, I was going through my deceased brothers journals, and found a photo of a man screaming with spiky hair. Same guy that had been drawn on the refrigerator when I was a child, after my brother had died.