I remember a "story" from an old JW family friend of my parents. She believed that she had a demonic experience. Or at least what happened, was credited to "demons".
What she said happened, was she came home at night to her apartment/home(I forget?), and all her furniture was turned upside down. The kitchen table, chairs, sofa, coffee table, dressers, all turned upside down. Some pieces of furniture were also stacked upside down, and on top of each other.
She claimed it was demons, and demons were in her house and did this, blah, blah, blah. So my Mother started really questioning her about it. Like why do say it was demons that did it? How did you know it was demons, and so on. Her answer was very emphatically, "that it WAS demons", and she even got a little angry that she was even being questioned. She continued to say, "plus I heard weird noises coming from the light bulb in the dining room".
Anyway, I do not know if demons did that or not, but I was listening in to this conversation. She didn't mention anything, like she saw a form, or felt a presence, and so on. It was blamed on demons, because she was "new in the truth", and just started studying. Satan and the demons, MUST have been trying to scare her away from the truth. This is why the demons targeted her.
I think it was all bullshit, at least concerning "demons". I don't deny that her furniture was upside down, and the light made "noises", but there could be a number of real world explanations, NOT demons. Maybe some teenagers got into the house and were screwing around. Maybe someone was playing a trick on her. Maybe they were gonna tell her after, and have a laugh, but because she really thought it was demons, and got scared, the person never fessed up to it, who knows?
The things that happened were physical, real world, things. Furniture being flipped, and moved, and a light making noise. Before she studied, she probably would have NEVER considered demons, but because she WAS studying, and learning for the first time about demons, this is where her mind went to first. SHE created the demon story as the ONLY explanation, and I am sure she still believes it today, because she is still a JW.