Mariana Conti Schwartz has one daughter, two dogs and 103 stainless steel drinking tumblers. The 40-year-old from North Carolina works from home running her family business, Big Al’s Pub & Grubberia, and likes to match her outfits to her reusable cups. Pink, purple, blue, green and grey “Stanley Quenchers” are lined up like soldiers on clear acrylic shelves across her kitchen; Conti Schwartz estimates she’s spent $5,000 (£3,900) on the lot.
Yet perhaps the most exceptional thing about her exceptional collection is that it is not exceptional at all.