One of the key ideas in "Time Wise" is the importance of achieving a flow state to enhance productivity. Adam Grant shares his method for getting into this highly focused state, which involves setting specific goals and minimizing distractions. This technique allows individuals to work more efficiently and produce higher quality work.

Laura Mae Martin, Google's Executive Productivity Advisor, introduces a unique approach to managing emails. Her method involves transforming the inbox into a more manageable and less stressful task. By categorizing and prioritizing emails, she helps readers reduce the time spent on email management and focus on more important tasks.

Cal Newport's use of multiple Kanban boards is another standout idea in the book. This system helps in visualizing tasks and managing them more effectively. By breaking down tasks into smaller, manageable parts and tracking their progress, individuals can stay organized and ensure that nothing falls through the cracks.