We also had an overseas move and back around 20 years ago. This wiped the slate for many of my older devices that weren't worth either exporting or re-importing.<p>Of items I bought myself and still use, oldest is a mini-Maglite flashlight I bought in the early 1980s. But it's a Ship of Theseus situation, converted to LED a decade ago. My next oldest item is a pair of Sony noise-cancelling headphones from around 20 years ago. Both operate on standard alkaline batteries, so are not doomed like so many other portable devices.<p>My iPod nano, circa 2007, is on the verge of death, unable to hold a charge for a whole song. It works attached to USB power/dock. From what I've read, it will probably kill itself soon when the battery swells.<p>If I include inherited items, I have things my dad bought new in the 1960s-1980s. Power tools like a drill, circular saw, soldering iron, heat gun, bench-top drill press, shop lights, and extension cords. We're also using major appliances, some probably from the late 1990s or early 2000s, including dual-fuel oven, refrigerators, dishwasher, and laundry washer and dryer. The oldest is the gas central forced-air furnace from the mid 1970s.