One of the things every Prepper needs is good airtight storage containers for storing food.
Now you can go purchase containers but that gets expensive. So to save some money I have found a good source. Restaurants.
Many restaurants order food in bulk. Thing like pickles and fetta
cheese. Often this stuff comes in nice air tight food grade pails that
are just tossed out after use. I have one restaurant that gives me one
large pickle pail each week for free and another that gives me all the
pails I want for $1 each.
Caveat: the pails are not clean. I do have to spend a few minutes
washing each one out but I figure the savings more than make up for my
So ask around at your local restaurants. You might be surprised at what you can get.
Oh one more thing - make sure the pails are completely dry before you put food in them!