der Kinderkram

child’s play, kid stuff

Kind child + er Plural (masculine/neuter nouns) + kram stuff, things, business
noun · plural-only masculine Rare #49,332
child’s play, kid stuff Informal; often used dismissively for something considered easy or unimportant.
GE: Diese Aufgabe ist Kinderkram.
EN: This task is child’s play.

Kinderkram.

Child's play.

— The Devil's Backbone (2001)

Das war Kinderkram.

That was child's play.

— Die Teuflischen (1955)

Kinderkram!

Child's play!

— Kung Fu Hustle (2004)

Denkst du, das ist Kinderkram?

Do you think that's child's play?

— Fight Club (1999)