As most here, pen and paper for me, I tend to try to use a stack of recycled paper (old one-sided printouts no longer required, less so now as we print 2 sides) held together with a foldback clip. The Pen is very important, has to sit comfortably in my hand and write well and consistently... not that I can ever read my writing :ermm:

Am always envious of those that can type quick bulleted notes in front of us into notepad while chairing a meeting presenting something on the same computer & projector. Very transparent and then shared.