Every year, a small but telling ritual plays out in the back seats of millions of Uber rides: a door swings shut, a car pulls away, and somewhere behind, a phone, a passport, a gold grill, or — in at least one documented case this year — a 75-gallon fish tank, is left behind. For the tenth consecutive year, Uber has compiled and released its annual Lost & Found Index, a running tally of forgotten and abandoned items that has quietly become one of the more unusual cultural documents in American consumer life. What began as a quirky rider-relations exercise has evolved into something closer to an accidental anthropology project — a year-by-year chronicle of what we carry, what we value, and what we are apparently too distracted, too celebratory, or too exhausted to remember when the car stops. The 2026 edition, released this week, marks a decade of data. And in that data, a portrait emerges. The Basics Haven’t Changed Some findings in the index have remained stubbornly consistent. Phones topped the most-forgotten list for the tenth year running, with more than one million reported lost over the index’s lifetime. New York City once again claimed the title of most forgetful city. And July 17 — the morning after the kickoff of Lady Gaga’s Mayhem Ball tour, Uber noted with characteristic deadpan — was the single most forgetful day of 2026. The top ten most commonly forgotten items — phone, wallet, luggage, keys, headphones, clothing, passport, glasses, jewelry, and laptop — read like a packing list for modern life, which is precisely the point. The things we cannot function without are, by definition, the things most likely to leave our hands in a moment of distraction. “The tech we can’t live without is also what we’re most likely to