Trello Power-Ups are features that give boards and tasks an extra boost, adding more functionality to Trello and integrating it with other apps. To enable these power-ups, users must first open the board menu, click on Power-Ups, search for the desired feature, and add it. Once enabled, users can create recurring tasks by clicking on a task, selecting "Repeat," setting the repeat schedule, and saving it. To stop a card from repeating, users can remove the date under Next Repeat. Additionally, Trello's Power-Ups can be automated using Zapier's integration, allowing for hands-off project management workflows where new cards are created based on triggers in other apps or information is sent to desired locations.