The Brillo pouf is a collaboration Mattan helmed back in his e-commerce days. The black-and-white canvas is a backdrop Mattan painted for a photoshoot, and the plate is a James Victore memento from a dinner party. The canvases are by Tyler Spangler, and the stools are both from Hem. Mattan’s most prized possession in this photo, however, is the blue piece of a police barricade. “Someone told me they were going to replace the old wood ones with plastic, and I felt like I had to save a piece of New York history. It’s also a beautiful piece of graphic design.”