I have a "I'm The Bride" bag that I picked up at Michael's. In it is my wedding planner, an accordion type file folder, and all kinds of half-started/completed projects. The bag goes with me anytime there's anything remotely wedding-y going on, so that I always have my lists, my projects (in case I see something that can complete them, etc)... and so on. I feel like my wedding planning has taken over my free time... so I'm right there with you!
You MAY want to add a 'to-pack' list. I have one, and I've been at Walmart before and seen something that was an AH HA! I need to pack THAT! moment. Just a thought!