For each project I have a trello board. So 3 main lists. Backlog, Doing, Done. The done part is by month so each month I create an new done list i.e. January

For each project I have a trello board. So 3 main lists. Backlog, Doing, Done. The done part is by month so each month I create an new done list i.e. January 2018 - Done I can then easily switch between boards.