I think House Elves love cleaning the kitchen. It's not that they spend all their time there cooking, but I think that's where they sleep, in either a little corner out of the way or a hidden room which could be easily hidden. They have to keep the kitchen clean or else their room'll become messy and smelly and they love clean stuff.

The one job I would never ask my House Elf to do is clean after my animals. I hate doing it, but if she was to clean it I'd have to send her off to a House Elf hospital for treatement of insanity. The poor dear almost had a nervous breakdown the last time I asked her

The strangest job I have asked my House Elf to do is spy...I mean watch over my enemies, or people who don't like me. I ask her to become invisible and keep an eye on them. I can't say anymore or else I'll break our sacred trust agreement. *zips lips and runs off*

My House Elf, who is away on secret assignment loves cleaning my room, she gets an extra day off for doing it. I make sure all my clothes ae picked up and safe from her so she won't pick one up by accident.