I feel like we could do this with food containers as well. It used to work great with milk bottles. There is a crazy amount of single use plastic used in this space.

As well -- how about we just slap the shipping labels on the box the item comes in? Why do we need to put a box inside of a slightly larger box? This is wasteful in my opinion.

I always thought there was big efficiency to be gained from standardized shopping box sizes for packing into trucks, but I could be wrong about that.

"Display boxes" aren't shipping grade perhaps? Product boxes are usually notably far thinner unless they are already meant to bear a heavy load.

Manufacturers of direct to consumer goods seem to generally eshew "display boxes" anyway, at least in my experience. But it could imply retail packaging and package packing for others.

The filling material in a lot of stuff I've ordered is tailored to the size of the object--think styrofoam bricks with a laptop-sized indentation on the side--so there might be some additional challenges pairing reused filler with the right sized thing.

Or additional challenges for the companies to comply with regulation, if there was any