The stuffed toy left on Winn's desk by his father is a representation of what Toyman looked like in the animated TV show Super Friends (1973). Specifically, that is the second Toyman aka Jack Nimball, who was a short-lived successor of the original Toyman, Winslow Schott, who was killed off by the original in the 1970s.
As Winn aporoaches the Arcade to meet his father, a Superman rocket ship kids ride is visible.
Live-action debut of DC Comics character Cameron Chase. In the comics, Chase is a blonde while Emma Caulfield Ford (who is usually a blonde as well) reportedly dyed her hair dark for the character.