The phrase 'did nothing' can be replaced with numerous synonyms to make your sentence more expressive and impactful. Few examples include, idled, sat idle, wasted time, lazed around, loafed around, lethargic, inactive, and unproductive. These synonyms convey a sense of laziness, inactivity, and lack of motivation. If you want to express a more contrasting situation, you can also use phrases like 'missed an opportunity,' 'failed to act,' and 'let things slide.' Using synonyms for this phrase in your writing can help add variety and depth to your expressions while ensuring that your message is clear and engaging for your readers.