. . . just speaking out of my own experience here. . . .
They get jobs doing food photography for the state paper (requiring me to make specific pies on demand to illustrate coming articles). They run with their papa.
They go off with other teenagers and insulate houses for the elderly poor. For hours at a time, in the heat. They swim and swim.
They sew dresses from vintage patterns. They bake lots of bread. They play lots of chamber music.
They plan huge get-togethers with other families, requiring me to make lots of food and go to the lake. They watch Andy Griffith.
They head out on birding trips in the desert Southwest, too involved in the birding to call home (well, he did call once: "I made it here. Gotta go, we're after a burrowing owl!").
They make an incredible amount of laundry. They practice diving. They sing.
They hike eighty miles at scout camp. They read chapter books to Daisy.
What will they do in the winter?