The Problem:
With the amount of items scattered around it's inevitable that you will click on someone else's belonging when you merely want to command your character to walk around the table. I have accidentally got myself into fights a couple of times already.

Solution:
Display a confirmation prompt if your character is attempting to steal an item from a left click so players won't accidentally steal things from walking around. Override the prompt mechanism if it's an Alt + Left Click to facilitate quick, mass stealing without confirmation.