I was in bed one night in my own home. I had trouble sleeping, as I had just lost my brother. My bed was in the middle of a wall, where a board was behind, and the headboard used to clatter against it, so I had it about 8 inchs away (as I do fidget!) I was just starting to doze off, when I felt ‘something’ heavy drop down on my foot at the end of the bed which also vigorously shoved the bed backwards and the headboard knocked into the wall behind, rebounding against it several times. I instantly pulled my foot away from ‘whatever’ was still right by my foot and switched my lamp on, to find nothing there.
It was about two years before I slept without the light on.