I can remember when the gift of time was an afternoon at the beach. I didn't know when we were going home. Wasn't thinking about what I had to do that evening, or tomorrow. I was just there. The sand and the sun were all that mattered.
Kids can make a whole world out of a crayon and a piece of paper.
Or a pile of leaves. Or a bath full of bubbles. They learn to chop it up into 7 periods a day, with 6 minutes between classes. This year my daughter has what I consider to be the ultimate foolishness built into her schedule. You go to your 4th period class for 20 minutes, and then you break.