I've got two small children at home, we go through milk at a rate of a gallon / 1.5 days. I will contribute jugs as fast as I can gather them. I can also try and round up some drywall, someone pm me with the size that fits the test chamber of death and I'll get them pre-cut for easier transportation. My also be able to contribute some various brands of ammo in a few different calibers (this is totally depending on my purchase power after buying ammo for NFA day)
I will take you up on your offer of the milk jugs as long as having some garbage bags full of jugs doesn't become to much of a bother for you.
Don't worry about the drywall for now. It's fairly easy to find cheaply or free (at construction sites).
LMW