Explanation
Used to list examples (often with a critical or complaining tone); 'things like A, B, etc.'.
Formation
Noun/Verb casual + だの + Noun/Verb casual + だの
Detailed explanation
The ～だの～だの grammar point is used to list examples, typically in a casual or complaining tone. It can be translated as 'things like... and so on'.
Examples
Kare wa itsumo chikoku dano, shigoto o wasureru dano de komaru.
I'm troubled because he's always late, forgets work, and so on.
Kanojo wa atarashii fuku dano, keshouhin dano ni yoku okane o tsukaimasu.
She often spends money on new clothes, cosmetics, and so on.
Kare ga iu ni wa, ongaku dano, eiga dano, hon dano ga suki rashii.
He says he likes music, movies, books, and so on.
Kodomo ni wa okashi dano, omocha dano, suki na mono o kagirinaku ataete agetai.
I want to give children all the things they like, such as sweets and toys, without limit.
Practice
Grammar content sourced from hanabira.org.