Adaptive Slot Cursor

Shows the pointing hand cursor when hovering over an item in an inventory, or when dragging an item over any slot. If the dragged item can't be put in the hovered slot (e.g. non-armor item can't be put in armor slots) shows the "not allowed" cursor instead.

(Uses your operating system cursors so it doesn't necessarily look like this)

Respects the vanilla "Allow Cursor Changes" setting.

No additional mods required (not even Fabric API), just Fabric loader for Minecraft 1.21.9+!