[phockthis]

5 gallon bucket with a lid that seals tight at Home Depot for a little over $3.00...

If they can prevent paint from drying up for years, it will seal well enough to preserve your food...

I have found that they hold about 33 lbs of food [rice, flour of sugar] and it equates to about 80 cups...

[LearsFool]

5 gallon bucket with a lid that seals tight at Home Depot for a little over $3.00...

I don't think those are food grade buckets - which means they might leach undesirable stuff into your food over time. You might want to investigate further.

They're great for storing other stuff, though. And pretty cheap.