Misha learns that an elderly person in the home spoils the home - which can cover pretty much everything else on this list. If you read the story closely (which is easy, since it’s available online and is only a page at most, depending on sources), the son is closely observing his parents. You can tell when the son tells the parents that he is making a wooden bucket for his parents to eat out of when they get old.
However, and spoiler alert, this causes the parents to see that they have been very mean to the grandfather. They vow to do better. That’s all we get from the story, but it can be inferred that the little boy’s bucket is never used for his parents’ dishes.