I had my first MCP tutorial this week with a small group of students (there were 7 of us). We described our research and focus to each other and then had to explain each other's projects to the group, the idea being that we could pinpoint what parts of our objectives aren't perhaps very clear to an audience. We also discussed methods of getting the work done, and were given these hand outs. I've definitely brainstormed ideas in this haphazard sort of way, although I tend to lean more towards lists to get ideas out of or into my head (although in many cases very messy lists!).
In order to organise my time at the moment, I've started keeping a box of notes. I use a small notepad to make several different lists each day - a general to-do list and more specific ones, lists of things to do daily, or lists of questions or things to look into regarding certain ideas or categories. I find that organising through multiple lists works really well for me, and I can revisit past lists easily if I store them in a dedicated box (looking back on previous lists often provides new ideas or reinvigorates old ideas that I can revisit or elaborate on). There is also a great website called listography.com which I use when I want a digital list. Sometimes I write down a lot of things quickly on a page and then transpose that into an easy to digest list, It means all my ideas are syphoned off onto paper and I don't have to worry I've forgotten something because I know I've written everything down and can thus concentrate fully on one task.
My MCP draft is reasonably close to being complete now, but I need to make sure I'm still working away at it, because some of the bits that are left to retool are quite tough bits. I find it so hard to keep going sometimes after I've been working on a piece of writing for a long time (I've been writing this essay for several months) but I've found it quite encouraging to go through the essay so far with someone else and discuss with them how I can change and expand sections. Having someone else look at your work can give you a fresh perspective and make you feel motivated again.
It also just feels very rewarding to have successfully improved a part of your essay, so I think it's good for me to remember to work small in order to really concentrate on one section and not get overwhelmed, as well as to ask someone else to give me some feedback - I don't need to completely rely on myself reading my essay again and again, desperately trying to figure out a way to change something.