Has anyone hacked a CFD?

We are intending to move parts of our work to Kanban and one item I would like to have available for meetings/retro is a CFD.

I've done a search a few times in One and am coming up short. It seems like the larger focus of the agile tools in WF is centered around scrum or just basic Kanban design.

Found it odd that WF even has an article around CFDs, but yet no tools. Is there a setup with Nave I am missing? Something that would be a custom report that I just don't understand?

Help?