I prefer to write by hand in meetings as well - I am not paper based for anything else, but I don’t deal well with computer based mindmapping tools.

By far my favorite capture tool for that was an old Electrovaya slate style tablet. 8 hours of battery life, lies flat so it isn’t obtrusive during a meeting. I got all the free form benefits of paper with the ability to draw lines at will and go back and margin notes easily. And the added benefits of being able to select and drag chunks of notes around to sort them was great, as was having all my handwritten notes machine searchable. Unfortunately I’ve largely abandoned it because I’ve been needing my Mac laptop and won’t carry both.

For cases where needing to type mattered, I found a portable keyboard for a PDA to be a benefit, since it gets the speed but doesn’t have the barrier effect of a laptop screen.

I am dreaming of a convertible Mac tablet - that would really give me all my favorite features of tools I’ve tried in one item.