Empty boxes, 4 boxes

This is a shipment of 4 boxes.
They are made of paper, light yet sturdy, so how about using them as toolboxes for stationery and other items? They were stored in a clean box, so I believe there is no damage.
Please note that these are amateur measurements, so there may be slight errors.
White: Large) Approx. 21 x 21 x 8.5 cm
Small) 13.5 x 13.5 x 6.5 cm

Black: Large) 17 x 24 x 5 cm
Small) 13.5 x 14.5 x 7 cm

All 4 will be sent together in a paper bag.