My father wasn't into knives at all, or outdoors type of activities like hunting/fishing/camping etc. We weren't really a "knife family".
Dad worked on a Navy base and would occasionally bring home Camillus TL-29 electricians knives, which were apparently abundant there. Several passed through our family (I sold a few to friends). The one pictured below was one of his, it's the last one I have, I keep it in one of my tool boxes and occasionally use it. There was a double leather sheath that held a TL-29 and a pair of electricians pliers that the US military used. I had one of those sheaths, now long discarded, but I still have and use the pliers.
Back in the 80's I gave my father a Kershaw 5200 (pictured) as a Christmas gift. I expected the knife would just end up in a drawer and never get used. But after he passed I found the knife, it was scratched and had lots of tape residue on the blade. Turns out he did use it, just didn't clean it. I carry that knife when I want a small discreet knife for use around non-knife people.
I no longer have any of my grandfathers knives (mother or fathers side). My gramps on my fathers side kept a Schrade switchblade in one of his tool boxes, and after he passed my uncle gave it to me, but when the spring broke I sold it to a friend who still thought it was cool. There were a few other cheap camp style folders, but they've been lost to the ages.
One knife he had was a very nice German slipjoint that served as his pocket toolbox. Seeing him use that knife for all manner of tasks played a major role in me developing an interest in knives. I was fascinated with the idea of carrying around a little tool in my pocket that could be used to fix or make all sorts of things. Unfortunately I didn't receive that knife, and it too is lost to the ages.
My mother had a collection 6 or 7 old pen knives that belonged to her father. Eventually each one ended up in my possession, but I no longer have any. Some I broke, a few I sold. I was a child who had not yet learned to appreciate knives or use them properly.
Instead of posting one of my modern knives I chose to add my Buck 110 (modified), which my parents gave to me as a kid (I'm now 50). It's seen a lot of use, and it still gets used.