I find it hard when I am in a creative burst, particularly when I am in ‘dream big’ phase to keep my thoughts ordered. I have recently discovered Trello. A fantastic list/organisation tool. It is fairly generic and can be used in a multitude of ways. I have separate boards for work and home, but you could create particularly boards for each of your projects!
It’s also really useful to use for group projects as you can share boards with colleagues or family members! There are also mobile apps so that you can use Trello on the go!