make Happy ghast more helpfull or usefull

Like Make Happu ghast to do things for you, like if it was online you could add AI to that mob, to pick items from a chest or to cut some wood maybe not, not the wood one, little things similar to that., 
That only work if the game is online but ive got Solution 
Right click Happy Ghast and a quick window or pop up will opens and you can select one from the gives tasks like Bring an item from chest / other tasks like that, and if you click on the first option i given here, that is bring and item from chest, it will show a list of chest that user made,  (user can give chest special name for this thing if they want otherwise it will show default names for chest like chest001 chest002) and the ghast goes and bring that item from chest and drop infront of player lol. 
This is a lot usefull because if user is building something and the chest is too far it will be little boring to go there and get cobblestone blocks.