Hi Redwood, several months back my wife was buying ice cream in 2 gallon plastic buckets.
I have saved them and i use them for all kinds of things in my meat processing and smoking. From grinder catch buckets to brining buckets, and have even used one filled 3/4 full of water with the lid on it to keep my bacon submerged in my larger 5 gallon brining bucket.
They are food grade, the lids fit nice and tight, I even keep some of my pellets in some of them so I don't have to always heft a 20 pound bag of pellets to fill my amnps.
Just a few ideas here; Rich-