Bulleted lists.
Lots and lots of bulleted lists. On paper. On my clipboard. (A clipboard makes anything look more official)
For some reason writing out my plans as bulleted lists works better for me than typing it up on a computer. Something about the action of writing it down, erasing, drawing arrows, sketching next to an idea, circling, and all that jazz helps my brain sort things out more efficiently and with less distractions.
I know, weird, right?