What item have you been using on a daily basis for the longest amount of time?
Sometimes I will use something and realize I've owned it forever. It's a nice change in our throwaway reality. I think my personal record is a bicycle multi-tool I got for one of my first bikes, ~25 years ago. Still have it, still use it. When it comes to electronic devices I have a Panasonic mini Hi-Fi from ~2005. Never felt like changing it.
Do you do much to maintain it? I always find that the Micra will loosen after a year or so and end up replacing it rather than hammering the rivet of the scissors to tighten it (especially since the blades get damaged and worn too).
All I've ever had to do is sharpen it. It was pretty tight when I first got it but it loosened up after a couple weeks. The joints on the Skeletool are also star bits rather than rivets so I could adjust it if need be.
I love it. Other multi-tools feel so clunky after after using it for so long. It just handles so well. It doesn't have as many tools as a lot of the other ones but it has the ones I actually use the most.