I am at the last part of the game. I have been putting it off to make sure I complete everything. However, I am missing two resources (they show up as three question marks). I am also missing one "used in" item under crude rope, sprig, sap, and acorn. All of the articles and forums I have read online don't list any items that I haven't already found/analyzed. So, is this something that hasn't been released yet or am I missing something obvious???

I have an Eyepatch at this place in the list (between the Torch+ and the Sprig Fence), but the same "???" is the latest element in this list (PC). And towards the end of the Natural Resource list, there are three similar items (but with four "?"). And I also couldn't find on Google what it could be.