Okay, thanks guys!!
As far as the swelling from moisture goes, I was going to keep them in Ziploc bags. I was also going to make up little sachels of women's nylons containing desicant, and slip them into the bags, as well. I at some point, also plan to conduct a little experiement, by wetting a biscuit and then placing it in a bag of desicant (measureing before wet, when wet, and after being in a container with the desicant).
I used to dry mushrooms by placing desicant on the bottom of a container, setting a food steamer insert above it (so the mushrooms didn't touch the desicant), placing the mushrooms in and sealing it up. Within 2 days, mushroom are completely dried. I'm thinking this will probably work with biscuits, too, without ruining their structural integrity.
Thanks again for the help!