Every crafting material and item has an ID attribute, so I guess that makes things a little easier.
But basically, as the title says, I would like to know how to make a proper ““inventory”” system (not the player’s backpack).
I was able to figure this out through trial and error, but basically I wanted to basically datasave how much of a material (like rocks, wood, iron for example) a player owned. I was able to do it with just serialization stuff.