“GitBan”: Kanban GitHub repository issue tracking - mhulse/mhulse.github.io GitHub Wiki
Multi-person example
1) Start with a GitHub repo:

2) Create some issues:

3) Write issue numbers on sticky notes:

4) Stick them on a whiteboard:

5) Use columns to track progress:

I created the “GitBan” system for use at The Register-Guard to track development issues.
Single-person example
In this example, I use this board along with BitBucket’s Jira:

I find the above is helpful for issues that span across multiple projects (esp. projects I don’t visit often); for individual projects/sprints, I use the Jira agile/kanban workflow and digital kanban board.