If the Quickbar is not enough, create toolbars that can hold items and tools and be positioned anywhere you like.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
As of now if you have 0 of an item it will stay as a solid image is it possible for it to change to transparent similar to how the quick bar works? Would look a lot cleaner visually and easier to read.
https://prnt.sc/g-NFGkrh5c5M