What is "shoeboxes"

Usage examples of "shoeboxes".

Debra stayed on the phone and coached her through the little pieces of paper, the search through the jacket pockets of his suits, his shoeboxes on the floor in the back of the closet, and made her shake books from his side of the bed table.

Frequently he paused and signed, knowing even as he did so that his signature was destined for shoeboxes and dusty drawers.