My nanna died when I was five, but my mum told me this story about something that happened to her when she was alive.
One day her and her friends decided to try out the ouji board. My nanna's cousin was dead and she wanted to contact him, so the girls asked to speak to him. I don't know the details of what else happened that night, but the next day, my nanna was at work (she was a legal secretary) and she was on the typewriter. She turned away from it to get something and when she turned back, the typewriter was typing a message all by itself. I don't know what it said, but it was from her dead cousin. After that, everynight for I don't know how long, at 12 o'clock midnight, every dog on my nanna's street would just start howling, all at the same time.
I'm a little disappointed that I never got to hear this story from my nanna herself, as I would have liked to have been able to reveal the details my mum and I don't know.