I enjoy most Apple products, but AirPods were the first product I truly felt were magical. (I also think being a game changer doesn't necessarily correlate with being the best designed product of all-time... just a product that was better than the competition at its inception.)
2012 15-inch retina macbook pro. I used it for 5 years and even then could have happily stretched it longer. It lasted me well into the era of terrible macbooks plagued with problems. The performance even held up, with its discrete GPU and formidable processor handling pretty much everything I threw at it. In lots of ways it was superior to even my current 2019 16" like port selection (display port, HDMI, SD card, USB-A), real f-keys instead of useless and annoying touchbar, smaller and less accidental-input-prone trackpad, magsafe, headphone jack on the left side (the only side that makes sense), and better user-serviceability. It so far outclassed every other laptop at the time that you can't really even compare. The things I built with that computer and learned while using it transformed my career and my life.
Reminder for Flying Blue