I know this isn't what you're asking, but I want to give a shout-out to personal kanban. My husband and I use a post-it+whiteboard Kanban board at home for household/personal tasks, and it revolutionized our life. We have five categories: Backlog, To do, In progress, Blocked, and Done.

We jokingly do retros every couple weeks to clear everything off the Done column and give each other feedback like "I really like how you insulated those pipes, keep it up!" The retros are completely unnecessary (except for fun), but the kanban board is life-changing: we don't have to nag each other anymore, because you can just look at the board to see what's queued up to get done. It completely eliminated a lot of unnecessary friction between us.