Trello-like plugin (not linked to issues)

I'd like to have a Trello-like page with simple Todos.
These should not be linked to issues, as they would be extremely simple tasks, stuff that you'd usually write down on a piece of paper (ie. "Buy more coffee" and "Give Georges admin privileges"). Simple assignment to a team member would be nice, but not even needed.

All the similar plugins I've found are link to issues. Is there any that fits what I want here ?