I like it. Thanks!

To get in with some of these expressions and to hit the books I'm thinking about putting some of them into anki-cards, like on the front side - explanations with the examples where the very idioms will be missed and dotted and a field beneath to print the answer. And on the back side - the thorough examples to check with some audios from picked from the ldoceonline.com.

As for "no-brainer" here in Russian we say "it's not a Newton's binom  -  подумаешь, Бином Ньютона!"

Your 2nd "face the music" example seems especially appropriate.

• Instead of complaining about my test score, I'm going to face the music and just study harder next time.

The "music" in this idiom may be the reversal of the sounds in the word "exam," pronounced eKSaM, that is, to face the consequences which probably involve an examination of your actions.