Speaking of the virtue of Productiveness, I have a couple of book recommendations for younger kids.
The Very Busy Spider by Eric Carle is the story of a spider so focused on building her web that the other farm animals are entirely unable to distract her. Catchphrase from the book: "The spider didn't answer. She was very busy spinning her web." Great for toddlers and preschoolers (especially if you get the board book). The pictures feature Carle's unique designs and little fingers can trace the spider's web as it is slightly raised off the page.
For the slightly older set--ages 4-7 (ish!), there is Ox-Cart Man by Donald Hall. This is the story of an early 19th century farming family from Maine who all participate in producing the goods that the father sells at the market. The story beautifully depicts the family's yearly routine and shows how the father converts their goods into money, which he then uses to buy supplies for next year's work.
We love those two books around here! I'm sure I can think of more, but I'm somewhat limited in that my kids are still very small. Any ideas for older kids?