As I am writing this, this happened about ten minutes ago. I have this box thing on a ledge where the window is in my upstairs bathroom. I usually put any extra toilet paper on it. So, I walk in the bathroom and there is one roll of toilet paper sitting on the box. I turn away, and hear something hit the ground, about two metres away from the box. Keep in mind, I only looked away for about a second.
I look back to see what that was, and I see the toilet paper, lying perfectly on the ground two metres away, almost like it was placed there.
I also remember, I have seen a white string of some sort move in that area where the toilet paper originally was.
I can't really explain how this could have happened, since there is no wind, and the furnace is not on.