The Old Man and his Grandson
"The Old Man and his Grandson" is a German fairy tale collected by the Brothers Grimm in Grimm's Fairy Tales as tale number 78.
It is Aarne-Thompson type 980B, The Wooden Bowl.
Synopsis
A man whose hands shook with the tremors of old age could not eat neatly and often spilled his soup, so his son and daughter-in-law barred him from their table and made him eat by the stove.When he broke the fine stoneware bowl from which he had been eating, they bought him a wooden bowl that could not break. His four-year-old grandson played with wood as well and said that he was making a trough for his parents to eat from when they were old. After that, they let him eat at the table again and did not complain about the spill.