I'll go first. Did I say it don't have to be about fishing. Well it doesn't.
I have been known to grind down the edge of forks so they can cut stuff better. Wifey only lets be do the "camperware", but it works great. I grind down one edge, about to the level of a butter knife, and I can cut though all sorts of food better. Even fried crappie! So I guess it is fishing related in a round about way, cool. I'll add a pic to this post shortly to show y'all what I'm talking about.
It’s really hard to see but here’s the flat side. And the bottom pic is one where I ground it down a bit. I could probably make it sharp sharp, but even this will helps cut through a good steak even!!!!