A reader, referred to as Nice Neighbor, asked their elderly downstairs neighbors to water their plants during a week-long absence. Unsure about compensating them, they worry that offering cash might offend, as they did not discuss payment beforehand. Lizzy, the advice columnist, acknowledges the reader's concern and suggests that a monetary offer could come off as mercenary. Instead, she recommends expressing gratitude through thoughtful gifts such as a nice bottle of wine, a bouquet of flowers, or a gift card to a local coffee shop. Additionally, Lizzy emphasizes the importance of a thank-you card, which can help build a positive relationship with the neighbors. This approach fosters goodwill and appreciation, ensuring that the reader maintains a friendly rapport with their neighbors.