The Poltergeist Experience:

In poltergeist cases, reported disturbances include: strange noises & knockings, &

objects moving about as if under their own power. Objects have been reported to fly about in bizarre trajectories, to crash to the floor & break, to break or shatter in place, & to disappear & reappear, sometimes in different locations. Beds are sometimes reported to shake & furniture to rearrange itself. In more rare cases, small, innocuous fires have started, water droplets or bursts have fallen from nowhere, stones have pelted homes, & vague apparition-like forms have been seen. Whatever the nature of the physical disturbances, poltergeist phenomena can inevitably be linked to an "agent."