apport

The supposed paranormal transference of an object from one place to another, or the appearance of an object from an unknown source, often associated with poltergeist activity and séances.

She put her hand down and felt it. "It's a flower - a chrysanthemum. Thank you, Wee One!" "An apport?" asked Mailey. "No, no, Mr. Mailey," said Bolsover. "They were in the vase on the harmonium. Speak to her, Miss Challenger. Keep the vibrations going."

An object that appears from an unknown source.

To cause an apport on an object, to make a thing appear from nowhere.