Because I was an inattentive blockhead again, I left my doormat at a campground. Not a big tragedy, easy to replace. I'd bought it at Home Depot or Lowe's for, like, $9.00. I just needed to be in a town large enough to have one of the home improvement centers.
Las Lunas, south of Albuquerque, happened to be such a place. And, whadda ya know, Home Depot and Lowe's are right next to each other. With connected parking lots. Home Depot was first, but they didn't have the simple, very functional, doormat I wanted. But Lowe's did. That was easy.