Flowerchild's kites
From Tardis Wiki, the free Doctor Who reference
Flowerchild made many colourful kites for the Psychic Circus, all decorated with the circus's eye symbol. They were remote controlled and could scour the skies to find people. The chief clown used them to track down Bellboy and Flowerchild. (TV: The Greatest Show in the Galaxy [+]Loading...["The Greatest Show in the Galaxy (TV story)"])
A red kite of this design appeared in the Remembered TARDIS when the Seventh Doctor and Ace were in it. (TV: The Curse of Fenric [+]Loading...["The Curse of Fenric (TotT TV story)"])