It always feels like a bit of a waste throwing out your cardboard boxes after opening them. If you're constantly trying to find ways to repurpose or upcycle old delivery boxes, this clever DIY ...
Another enquired: "Can I lay old cardboard boxes down, or is that a bit too thick?" Ish reassured them: "You can indeed. Just make sure it's plain cardboard and get the tape off it." Article ...
To limit cardboard use alone ... One option to reduce fresh filler material is to shred old boxes into fillers that can do the same job of protecting items during transport.