When they were younger we referred to them as Thing 1 & Thing 2, you know, from Dr. Suess's Cat in the Hat. They were quite the pair making messes from one end of the house to the other.
They still keep me hopping, but they aren't quite so messy anymore. In fact, their room is the cleanest in the house. They make their bed every day and do their chores almost without being reminded to. They are constantly giving me kisses and hugs. They make me laugh daily.
I think I'd be blue without Thing 1 & Thing 2.