I have a few of those Honorary suckers. They're in a cardboard mailing tube in my closet. I just went and looked at them and yup, they say "Honorary Black Belt" right there on the front of them.
But I'll tell you what, they mean more to me than ones I've earned. To me, they are a great honor bestowed upon me by long time recognized Instructors from other systems/styles/lineages. Some of these people I've trained off and on with for forty years. I've trained some of their students in how to apply their own art to fighting and/or self defense, I've trained under some of their instructors, too, Masters, what-have-you. And back in the day we used to beat the crap out of each other in competitions, or at each others dojos.
I'm just surprised nobody as yet to give me an Honorary Punching Bag certificate. I think I've earned it.