I can do nothing about the volcano. I realize that. So I am finishing up my planning and preparations, and I share my finished results here today.
I drew out some maps for my stay in Paris, to help me figure out the logistics of what to do when; which things I could group together on a certain day because of their proximity. I am not bringing these with me, but they really helped me figure out my itinerary. It is hard to see, but I color coded metro travel, walking travel, etc.
I also have some more examples of my personal travel guide/bible that I put together. Maps copied out of Rick Steves books or google maps; miniaturized train tickets and tour confirmations. I have everything here.