This is a very nice plugin. Good idea, is very usefull, is replicating the idea of other survival games, which is very cool, the developer have listened my suggestion and he added quickly so... 5 star no doubt!
Pretty good plugin. Works as expected. Only issue right now is that if you die from a creeper explosion close to you, the barrel created gets destroyed and all the items drop on the ground.
Can you detect if the place of death is air? For example, if it is killed by sweet berries or died on rails, the resulting bucket will cover sweet berries or rails. Can you create a bucket on the surrounding air?
Would be great if you add a key [Tripwire] to allow the player to open the barrel so no one can steal it.
And a simple hologram on top of it.
Players might be also be able to duplicate barrels by consistently dying without claiming the old spawned barrel. so cooldown would fix this.