If you aren't phobic about different fats, regular old lard will give you some extra flavor in corn tortillas. I just started with food preps so most of mine has been MRE's, Wise and now have two trip to the LDS store.

I do have three kits for homebrewing some IPA using dried malt extract, some adjunct grains (barley, just either roasted or malted slightly differently), hop pellets and brewer's yeast that comes in sealed pouches.