The Clue Do nothing (or MG's mood while making this "new" grid!)
The Answer IDLE
The answer "IDLE" fits the clue "Do nothing" because the word means to be inactive or not engaged in any activity. When someone is idle, they are simply passing time without doing anything productive. Additionally, the reference to MG's mood while making the "new" grid suggests a feeling of being relaxed or unhurried, which aligns with the idea of being idle. Overall, "IDLE" perfectly captures the essence of doing nothing.