This post has the solution for Glass that makes a rainbow crossword clue. The New York Times Mini Crossword is a mini version for the NYT Crossword and contains fewer clues then the main crossword. You can play the mini crossword first since it is easier to solve and use it as a brain training before starting the full NYT Crossword with more than 70 clues per day.
Glass that makes a rainbow
SOLUTION:PRISM
Check the answers for more remaining clues of the New York Times Mini Crossword December 26 2021 Answers.