I don't sleeve the cards. I find sleeved cards harder to use (especially shuffling).
Note, I have all the expansions, including the web scenarios and the various zombie colors. (
)
My storage:
* The small box from "Hero Pack 1" has the hero-related items: hero cards and figures, dice, survival & unique items and level up decks and turn reminder cards in an acrylic deck box (
http://www.coolstuffinc.com/main_supplie...xGamingBox like this, but smaller). This box also has a small baggie with all the health markers, and the turn counter disk in it.
* The "Zombies with Grave Weapons" box has all the zombie figures, a turn reminder card, a couple dice, and another small deck box with the grave dead and level up cards in it. I also have the bag of the usually used markers (lights out, new spawning pit, and so on).
* In the Growing Hunger box, I have the scenario cards, the hero & zombie decks, and the L tiles, since they all fit in it quite nicely.
* Any of the extra tokens and so on I have in the small box from "Survival of the Fittest".
* I find having these multiple boxes makes it much easier to set up and clean up. Set up the scenario from the big box, hand the heroes their stuff, the zombies their stuff and off you go.
* I've already decided that the next expansion that comes out, unless it has its own spectacular storage solution (unlikely), I'm going to ditch the plastic divider and try to fit it all into the one box without it.