Potion Shelf

This block can be made from any of the 6 different vanilla woods and will look like the wood that is used.

Right clicking the shelf with an accepted potion will put that potion on the shelf in that slot. Right clicking without an accepted potion OR if the shelf is full will open the GUI. Sneak clicking with an empty hand will cause the potion the player is aiming at to pop off. Potions are added/subtracted from whatever slot the player is aiming at.