Yea, that story about collecting water from dew got me looking for a sponge-type solution, too. Yesterday I bought "The Absorber" -- a synthetic chamois. It is tough, very absorbent, kindof a cross between a cloth and a sponge. When dry it is like a piece of lightweight cardboard. It wrings out easily. I cut a piece to include in my fanny-pack EDC kit, and plan to cut other pieces for the car kits. What's left will make a good camping towel, a use to which I've seen it applied successfully. I got the salmon-pink version to double as a signal, e.g. tied to a stick outside an improvised snow shelter.
BTW I learned about "The Absorber" at a cool site called "Keven Kelly Cool Tools" at
http://www.kk.org/cooltools/ . It has sections on "Homestead" and "Outdoors" (including a review of Doug's Pocket Survival Pack!) The "Absorber" review is at
http://www.kk.org/cooltools/archives/000381.phpDisclaimer: no connections to the product or the site, but I like 'em both! <img src="/images/graemlins/laugh.gif" alt="" />
Steve