Never collect them and always throw them away because I never needed them.
Is an ingredient in a potion that you can brew. Unfortunately I don't know which one anymore
Brew potions or food (not recommended).
https://minecraft.fandom.com/de/wiki/Spinnenauge#Verarbeitung
Nothing completely unnecessary just for drinks but you can find them almost everywhere so just throw them away or give them to your friend to eat.
I only use those to make spider eyes fermented with sugar and those brown mushrooms that I then use to brew Weakness Splash Potions and use to heal zombie villagers
So not so unnecessary
Where can you find which potions?
A Piglin trades Fire Resistance with a low probability and that is the only one
You can also use spider eyes to craft a fermented spider eye and use it to brew a weakness splash potion that can be used to heal zombie villagers
So it's not that unnecessary
I meant that you will most likely get the spider eyes if you want to make potions etc.
Oh xD
Well, I've never used it for anything
You can eat them but then you are poisoned or you add sugar and a mushroom and add it to the brewing stand and if you have, for example, a drink of speed and a fermented spider's eye or a normal one, I'm not sure we will drink it for slowness
