Item Dropping, Basics
While in GUI mode you can drag items out of your backpack to drop them on the ground. There is a limit for how long the dropped items stay before they despawn and a limit how many one player can drop in a short duration of time. If you hold SHIFT while drag dropping, you can split the item and drop only a portion of the item.
All dropped items look like a basic sack on the ground. But when you get close enough you can find out what’s inside without picking it up. Note that the dropped items don’t stay on the ground forever so be careful with that.