The Mets may not be sitting on top of many statistical categories at the moment, but their clubhouse manager, Kevin Kierst, leads the major leagues in one area: eclectic collections.

From his days in the minors, he keeps what he calls “a library of broken bats.” There are the 561 bobbleheads in his Citi Field office, including one of himself in a hockey referee’s uniform that was gifted to him by friends for his 50th birthday. In a drawer, he stores an extra head wrapped in plastic, just in case.

There is also a horde of Minions, the yellow, goggled stars of the “Despicable Me” franchise. Behind his desk, Kierst has three packs of Minions Tic Tacs next to a Minions Pez dispenser. A Minions stress ball stands beside a Minions picture frame, a Minions tissue box and a Minions mug with six Minions pens in it.

“Maybe I should break out my Jack Daniel’s collection, too,” he said.

But his most prized collectibles hang on the walls. They are baseball movie posters, such as “Kill the Umpire” (1950), “It Happened in Flatbush” (1942) and “Major League” (1989). He likes the lithographs from the 1950s the most, and is sensitive to how light might fade the colors. Preserving posters can be just as challenging as procuring them.