Is your house too clean?
Do you need crackers,pieces of paper, bread, raisins, etc on the floor?
Is yellow is the new accent color in your bathroom?
Have you had anything broken in the last 25 minutes?
I bet your house is just too quiet and you need to rent 3 two-year-olds for the afternoon.
They will love to tear every Kleenex out of the box for you and pull every book off the shelf.
They are just so extremely helpful that you won't know whether to laugh or cry.
But you could only have them for short period of time because I would really start to miss them.