What do you use to keep puffs and rice cakes from going stale without hauling a big container? I use ziploc or reusable (Smitten Baby) snack bags. But as LO isn't eating a whole lot yet, I've noticed they've all gone stale or kind of soggy after a few days. Ziploc's obviously the better of the two I use, but wonder what else HB'ers use?