Backpack

You would drop this item when you die with all your stuff in it. It would not burn or anything. This would help when someone is in an epic battle and they get tons of loot and die. This would keep their valuable items from despawning that they spent lots of hours to get. This item would take up one slot but they cannot ounpack it unless their inventory is empty or they click on an empty double chest. Basically it is devastating to lose all your valuables because you died and they despawned while you were fighting to get them back.