Brilliant for managing all your project backlogs in a Kanban fashion. Including a list for the DIY tasks around the house.
As a Marketer I use this daily to manage workflow, sort ideas around future content and prioritize my activities. My team collaborate and report using handy integrations with Google and we use it as a Customer service and Sales script repository to store links to docs and how-to videos.
If you aren't an organized person Trello allows for easy to see visuals that help keep projects on track. The team at Curexe has specifically used it to organize our bugs, new features, staging and production stages of our development.