This is very generous of you.
My favorite knife has to be my Victorinox Swisschamp. My uncle got it for me as a Christmas present. I had to be in elementary school or middle school, which puts its age in double digits. I'm sure I used every tool on that thing, sometimes just because I had them, like the magnifier to look at anything interesting that came my way. I carried that thing day in and day out for years, from around the house to (many) Cub and Boy Scout camping trips, but all there is to show it is quite a few scratches on the handle and one or two on the long blade, along with my initials engraved on the smaller blade by my father from when I received it. I stopped using it some years ago but saw it in a drawer recent and pulled it out. It had lost some of the snap, so I took water and dish soap to it, then blew it out with an air compressor. Everything snaps open and closed as good as the day it came! That's pretty amazing to me. I'm sure I didn't take it easy on it as a kid.