Spoon

A spoon was a device used both as a cooking or eating utensil, (TV: The Eleventh Hour et al) and as a musical instrument. (TV: Time and the Rani) It has found some other strange uses, as well.

As a utensil
On Earth, as well as other planets, spoons were used for cooking, (TV: The Lodger) and eating food, especially soup. (TV: The Eleventh Hour, The Unicorn and the Wasp)

The Androgums used a type of spoon called a boomerang spoon for their cooking. (PROSE: Storm Harvest)

As a musical instrument
The Seventh Doctor, early on in his incarnation, showed a knack for playing the spoons as a musical instrument, though this was seen less as he matured. (TV: Time and the Rani, The Greatest Show in the Galaxy, PROSE: Strange England)

Representing Earth in lieu of Nicky Newman, he won the 309th Intergalactic Song Contest by playing the spoons. (AUDIO: Bang-Bang-A-Boom!)

The Doctor played the spoons again while a prisoner in Colditz Castle. (AUDIO: Colditz) He asked for spoons to play when he held prisoner by the Russians during the Siege of Sevastopol. (AUDIO: The Angel of Scutari)

The Doctor played the spoons during a visit to the Worldsphere. He claimed that he broke the galactic record for continuous spoon-playing (sixty-seven hours). He would have broken the universal record but a Garthanian telekinetic kept bending his instruments. (PROSE: The Also People)

During their encounter on Perfugium in the far future, Death noted that the Doctor stopped playing the spoons and mangling his proverbs after his personality began to darken. (AUDIO: Master)

Other uses
In 1471, One-Armed Clarrie supposedly fought off twenty Lancastrians with only a spoon in the Battle of Tewkesbury. (AUDIO: The Kingmaker)

A spoon was used once again as a weapon when the Tenth Doctor destroyed Baltazar's ship with a metal-eating fungus on a spoon. (TV: The Infinite Quest)

The Tenth Doctor again used a spoon to send an Morse code SOS message when he got trapped in a data core room on the planet Hurala. (PROSE: Prisoner of the Daleks)

The Third Doctor once made a time flow analogue from a Moroccan burgundy bottle, spoons, forks, corks, key rings, tea leaves and a mug. (TV: The Time Monster)

The Twelfth Doctor used a spoon in his fight with Robin Hood. (TV: Robot of Sherwood)

Spoon-like objects
Among objects that resembled a spoon were an anti-Droon audio paddle, a pest control device and the head of a Spoonhead.