Hermione's Campaign for House-Elf Freedom
Pages 254-255
Hermione places homemade woolly hats in the common room for the house-elves, hoping they will pick them up and be freed. Ron criticizes her for tricking the elves into gaining freedom they may not want. After Hermione leaves for bed, Ron removes the hats, arguing that the elves should at least see what they're picking up.
