If you want stuff sealed in a can, I guess one could first seal the stuff in a bag with a vacuum sealer, then seal that bag in a gallon paint can. Those cans are probably not food safe by themselves, but the vacuum bag would get around that. New, unused, paint cans are usually avalible at hardware/paint stores. Or you could put the sealed bags in a plastic five gallon bucket with lid. Foodsafe buckets can usually be picked up for little or nothing at restaurants or donut shops...
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OBG