I use tracing paper or sketch pads (found in art departments, they are large spiral bound pads).
I use the fat crayola markers or colored pencils.
Mind maps are more effective with color, but even with monochromatic coloring they are still more effective than traditional notes.
As mentioned in another post, the school I attended for 10 months did all the lectures in mind-map format. Usually only a couple different colors per lecture, those were done on the large newsprint pads.
Tracey