This is suggested in our curriculum, but I think it's fantastic, so I thought I'd share it.
I made a spontanious run to Half Price Books today in order to find more for the last half of this year. I love book shopping.
I like to set aside 20 minutes a day, usually after lunch, to read any book they choose from this basket. Then I simply ask them what they learned.
They help me pick out some of the books. They choose what to read. They find something interesting. They learn.
And I have a 20 minute quiet time :).