dobby, winky, and kreacher
Questions to ask yourself:
1. How do you feel about Dobby working for Hogwarts? What about his pay?
2. Do you think that Winky was too attached to the Crouch's?
3. What do you think made Regulus trust in Kreacher? Was it just his ability to see Voldemort's flaw or something more?
4. How are house elf baby made?
5. How do you feel the three elves would have interacted with one another?
6. Do you think that Winky could ever be happy again?
7. DOBBY IS A FREE ELF.
8. What do you think happened to Kreacher after the war? Is he still with Harry?