kids' stuff

/K IH1 D Z S T AH0 F/
noun
  1. 1

    Something done by, used by, or characteristic of immature people, especially children.

  2. 2

    Something that is easy to do or easy to understand.

Synonyms

Source: https://en.wiktionary.org/wiki/kid%20stuff, https://en.wiktionary.org/wiki/kids'%20stuff