Indestructible Weapons

I remember aaaages ago we used to start off with what looked like a bowie knife? It was indestructible and really something that was coveted. I was wondering if it would be possible to add such things back in to the game, maybe not as a starter item. But perhaps as a reward for taking out either a boss or a extremely rare crate find. Even the machete is cool in the co-op variant with the starter crates, would be great to find these in the world as something that’s really rare and therefore coveted and will make a player explore more.