Reading this has made me wonder about the experience I had a couple of days ago.
In the run up to paranormal activity I experience, which is usually relatively minor, I often get woken multiple times by voices right by my ear, often calling my name or a name of some sort. This happened on the preceding 3 nights and on the night in question I was getting tired out by it!
Then, I awoke suddenly and opened my eyes, allowing them to adjust. I then saw a fuzzy black-grey sphere, about 20cm across, slightly lighter than the back ground blackness in the room, sort of a dark grey colour but neither shiny nor matte, I suppose satin? it just stayed there at around 2ft from the floor. I moved my head around to check I wasn't imagining it and it stayed put. I then decided to kick my leg at it to make it go and I turned on my phone light - of course, nothing there!
I have tried to reproduce the conditions to see if I was interpreting something in my room but to no avail.
Not especially scary but just gave me a bit of a shock at the time. It was interesting to read similar accounts.