Golf ball
From Tardis Wiki, the free Doctor Who reference
A golf ball was a small ball covered in indents used in the game golf. Brian Williams found a pair in his pockets while aboard the Silurian Ark and used them to lure Tricey. (TV: Dinosaurs on a Spaceship)
When a pair of Craktors came to the Pontyvale Golf Course, the eggs were disguised as golf balls. (COMIC: Ma and Par)
A Dogon Sixth Eye fell out of the sky while Mr Garret was playing golf. Its familiar shape caused him to misidentify it as a golf ball. (TV: Random Shoes)
