Test analysis: this small question examines the meaning of goods. If you want to become a commodity, you must have two conditions, one is that it must be a product of labor, and the other is that it must be used for exchange. Both are indispensable. Although the Spring Festival couplets given in the title are products of labor, the donated things are not used for exchange. So it's not a commodity. So choose C for this question.
Comments: The key to solving the problem lies in accurately grasping the meaning of goods. The difficulty is moderate. An accurate understanding of basic concepts is the most basic requirement. Commodity means that the content of the exam should be reviewed comprehensively.