So I was thinking:
What if barrels of Rum (similar to Gunpowder barrels) were added to the game? You could keep them and drink from them, or hand them in to the Merchant Alliance?
Sea turtles could be of the "Catch & Hand In" variety: you have to swim in the ocean with a basket similar to those used for the snakes. (There are already turtle shells in game so maybe this is already on its way?)
Then, what about a type of chest that when you dig it up you have to open it? (Maybe there's a key system, or you have to shoot the lock off with a well-placed shot?) That way there could be anything inside from; bags of coin, jewellery, skulls or any of the items already available in completed Skull Fort Treasure Rooms (relics and chalices etc).
Just a few thoughts.
