Please add a notification when you are close to full inventory:

Yellow 16-9 slots left

Red 8 or less

Its supposed to be a bag icon.

B4 you try to make 2 separate icons, you can squish it all in one!

You can keep the number above (which gets red for 8-0 so does the bag icon) or assume everybody should know yellow for 16-9 and red 8-0.

Easy fix if you ask me, this suggestion is not new btw.