Mine contains Imray passage charts on paper, 2b propelling pencils, leads, magenta gel pen, Portland, dividers, Samsung N110 with Imray digital charts, handheld GPS. Lives under the chart table on my own boat and comes RORC racing with me.
I have one of those Freebe John Goode cockpit plotters. Much more handy than the full size portland for those of us with small (or no) chart tables. I gave one to a friend for use on his Silhouette.
I found them hopeless; everything goes in the one bag. Gets a few comments from people about how much stuff I carry in one bag, but I can fit everything I need in it, have never lost anything and have never lost a bag!