Pet food containers are a classic option for home brewers storing grain. The other one is 5 gallon plastic utility buckets (I’m assuming there are equivalent sizes in other countries), and you can buy lids for them that make them airtight with a gasket (brand name gammaseal, is believe).

OP if you are looking to reuse something, one option I’ve used in the past are frosting buckets from grocery store bakeries. The cheap cakes you can buy usually dont use house-made frosting; they purchase big buckets and discard them when empty. You can ask at the counter for a few, and they are usually happy to give them to you rather than throwing them away. They are essentially the same thing as the big utility painter’s buckets, but you know they are foodsafe, and they are a bit smaller (maybe 10 liters?).

Those are the nice, clear ones, too. The polypropylene ones are opaque and a good bit cheaper, but seem to function more or less the same. I’m not sure on the pros and cons of polypropylene vs polycarbonate in this application, though. The downside of this kind of container is that they aren’t airtight, so if you are storing something like whole wheat that can go rancid, you need to make sure you are still using it quickly enough.

My kitchen scale that runs off of one of those batteries lasts for years, and I use it every day (coffee). Yours must have some kind of parasitic draw.

They cam do that a little bit when they are new. Wool has lanolin on it, which can soften fabrics, and decrease static, but it wears out over time. You can “refresh” them by just re-adding new lanolin.

As far as I know, in the US, recycled glass is recycled, not reused, so they basically waste a lot of energy to melt the glass back down and make new bottles.

Reusing can definitely be done effectively, though. Homebrewers do it all the time with pretty safe chemicals. If you have industrial machines and chemicals, you can probably get the glass sterile, and if not sterile, then definitely close enough.

As far as I know, in the US, recycled glass is recycled, not reused, so they basically waste a lot of energy to melt the glass back down and make new bottles.

Reusing can definitely be done effectively, though. Homebrewers do it all the time with pretty safe chemicals. If you have industrial machines and chemicals, you can probably get the glass sterile, and if not sterile, then definitely close enough.