Fantastic Beasts: 28 Easter Eggs & References You Must See
6. "No Bigger Than A Bowtruckle"
Obviously Niffler is the real Fantastic Beasts MVP, but he's pushed hard by Picket the Bowtruckle, the stick-insect like creature who helps Newt Scamander escape from the execution room at Magical Congress.
His appearance actually adds to a famous line from an earlier Harry Potter film, when Hagrid refers to carrying Harry to Privet Drive when he was "no bigger than a Bowtruckle". Obviously Harry was not that small, but it's clearly an affectionate phrase (and besides, Hagrid's ability to differentiate sizes is probably not that great).