I have discovered a great way to spend time with my six-year-old. We sit on his bunk bed armed with nerf guns and a large supply of nerf bullets. Down on the floor sits a blue plastic bucket. If he successfully lands a bullet in the bucket, I pay him ten cents and vice versa. After about an hour of this, he owed me fifty million dollars (according to our rather creative accounting) and I owed him about seventy zillion dollars. He paid me the thirty-two cents he had in his pocket and I paid him with another thirty-two cents (but not the same thirty-two cents he had paid me, as he insisted that would not be right).