Years of use and abuse haven’t stopped this backpack from accompanying its owners through new cities, countries, and life stages. “My dad used this backpack when he was in high school in the ‘70s and somehow it got passed down to me, his middle school-aged daughter, in the 2010s,” writes Leigh Caldwell of Dallas, Texas. “He used the top pocket to hold his calculator and slide rule, and I used it to stash my iPod shuffle.”