@palmerluckey What happens if someone has a decoy P.O. box that gets full? Does the postal service then not deliver, or do they dump the junk mail around the P.O. box?

It would be fun with a company that took care of junk mail, and repurposed the paper into paper boxes, napkins, writing paper, etc. Sadly I suspect the quality of junk mail paper to be junk, and that it might be more costly to convert it into something than just buying plain paper or carton.