take the elevator downstairs (My 6 year-old appreciated getting to ride up to the 4th floor; it takes a special key. She even got a tour of the technical services office.), and then put the book boxes on the sale tables.
And the downstairs room looked filled-to-overflowing.
My kids and I felt very happy to be contributing to the Friends. We slept well that night from all the exercise. But best of all, we got to pick out our purchases before the other shoppers arrived.