I've never used a planner. I do have a spreadsheet, similar to what others have said, that I started a couple of years ago. It has columns to chart the stages of my UFOs, and a different page to note quilts I would like to start at some point (this has absolutely no organisational purpose whatsoever - when I start something new I just start it, I don't think I've ever referenced my spreadsheet for an idea of what to start, lol!).
I'm one of those that often has great intentions, but doesn't keep to planner-style organisation.