The U.S. Postal Service isn’t exactly known as an arbiter of cool. To philatelists, maybe. But certainly not to those who think stamps are just a stickier kind of cash. At least, not until this past June, when the USPS issued a series celebrating the life and work of husband-and-wife design team Charles and Ray Eames. USPS art director Derry Noyes, whose father was friends with the Eameses, chose 16 images, among them a molded-plywood chair, the classic lounge and ottoman, and the couple in 1944. Infinitely collectible. Pane of 16, $7, and first-day cover, $16; shop. usps.com