Today I was walking my 15 month-old around the house, her little hands grasping my fingers. Her older sister came into the room, and the youngest immediately thought this was a game of chase. Her squeals and laughter caught on, and soon the three of us were engaged in a game of tag. This evolved into an impromptu game of hide-and-seek. As the youngest and I were toddling around the house, looking for big sister, it dawned on me. Today is my last day with two. Tomorrow, my 5 year-old goes to Kindergarten. In that moment I was whipped back in time, remembering her firsts. How had this happened? Now, I have been through this before, my oldest is now a 3rd grader. But somehow this was different. Maybe it was because my 5 year-old was the baby for 4 years. I don't know. But as we ran around the house, in our last day of her smallness, I realized that today, this game of hide-and-seek was the one thing needful.