It’s hard to put a finger on just how the New York store Kiosk — which peddles quirky housewares from around the world, one country at a time — vaulted from cherished destination of a few to the kind of place Jasper Morrison, London's best-known everyday-object apologist, feels obliged to check out when he’s rolling through town. But while the 4-year-old Soho shop has begun to shed its air of secrecy, it has never lost its charm. Climbing a set of graffiti-covered stairs to its second-floor entrance, you never know what you’re going to find at the top.