A spoon is an eating utensil often made of metal. It is comprised of a handle and a bowl-shaped end on which food is placed. It is common on Earth, although other cultures have been known to use them.
Prior to 2367, Jono was unaccustomed to eating with a spoon. In that year, Wesley Crusher offered some of his banana split for Jono to try. Jono, unfamiliar with the utensil and the dish, drove the spoon into the dessert and accidentally flung some of the dish's contents into Crusher's face. (TNG: "Suddenly Human")
Later that year, Will Riker encountered a Tilonian named Jaya at the Tilonus Institute for Mental Disorders. Riker realized Jaya was one of the institute's patients when she attempted to use a spoon as a communicator to contact the Starship Yorktown. (TNG: "Frame of Mind")
In 2372, a being known as The Clown enacted on Harry Kim's fear of growing old and having to be taken care of by nurses by manifesting these fears into a reality. He made Kim believe that he was old and frail and presented him with a little nurse who fed him his medicine using an over sized spoon. (VOY: "The Thaw")
After an older version of Molly O'Brien returned to 2374 after spending ten years by herself in the distant past of Golana, her father showed pride when Molly began to regain her habits prior to her disappearance. Among the achievements he noted was her starting to once again eat with a spoon. (DS9: "Time's Orphan")
In 2404 of an alternate timeline, Reginald Barclay used a traditional clanging of a glass with a spoon to gain the attention of everyone at the 10-year anniversary of USS Voyager's return from the Delta Quadrant. (VOY: "Endgame")