Rumer Godden is a consummate storyteller--and this is one of her most accessible tales.
Peter is a very introverted little boy, perhaps because he has been taken care of by a string of nannies and housekeepers or perhaps he is just that way by nature. But his latest housekeeper/nanny is Marta, a Ukranian who barely speaks English. She is an unhappy exile from her homeland, and is sad because the kitchen has no "good place"-- an altar with candles and an icon of Mary and the Infant Jesus. At home, the kitchen would have been a warm and cozy place with a candle-lit icon twinkling with little jewels in a dim corner.
For some reason, Marta's inchoate expression of her homesickness touches Peter, and he goes about making an icon for Marta. The story of how he finds materials to make the icon including foiled toffee wrapper "jewels" is a great little adventure and the puzzlement of Peter's parents, who have written him off as cold and strange is delightful. In the end, both Peter and the family are changed by the "good place" in the kitchen but more so by the lesson that doing something wholly for someone else has rich rewards.