Roughly thirty years ago I knew a very young female co-worker who had this poltergeist-like phenomenon. She'd walk past a desk and a 10-key or typewriter would slide right off the desk onto the floor. Other smaller objects like staplers and such flew as well; but, the typewriter was the largest.

I watched this for months until I could determine beyond a shadow of a doubt that it wasn't cords being tripped over nor intentional quick hand-work by occupant desk-owners.

Other co-workers agreed that they had seen this anomoly and kept it to themselves as they thought they had missed something. Nobody had talked to the girl.

I cornered her after work and told her of a tv show I had seen where they had determined there was an "electrical short-circuit" so to speak in the person's brain at the back of the head. (I've forgotten now if it was in the obdula oblongata or just above that.) I told her the show suggested a person afflicted with this peculiarity see a "parapsychologist".

She held no grudges against any of the person's whose equipment was 'victimized.' She was very grateful and happy to find out there was a reasonable explanation and a possible treatment. She'd been called "Klutzt" and "Clumsey" all her life.

It never happened again!