When a co-worker gave me a tiny 30g replica of the famous jar of sweet spread I had to know where I could get more, turns out sets of three mini jars are only sold during holidays so for Easter I hoarded some sets.
They are great for keeping ink! The lid screws tidily, thick food-grade plastic so there aren't many chances it might react with some ink, the jar is quite capacious, the plastic is clear so I can check for precipitations in mixtures, nearly perfect I'd say!
I don't really like sweet stuff that much, the things I do for the sake of pens...