The UsefulBox is an item purchased from the Miner which gives access to a variety of menus without needing to visit the relevant NPCs.
OBTAINING
The UsefulBox can be bought from the Miner for 500,000 Coins. You must be Mining Level 16 or above to purchase it.
ABILITIES
Right clicking the UsefulBox opens a GUI containing several buttons. Each of these buttons links to a separate NPC in the game: some examples include Upgrades, the Renown Shop, and the Enderchest. (get a full list to replace with) (add an image)
The main selling point of the UsefulBox is convenience, thus making it a popular purchase for late-game players.
ALTERNATIVES
The UsefulBox is somewhat outclassed by the /usefulbox command, which has the same purpose. However, the command requires the player to have a Yummy Biscuit active, or to have the MVP+ rank. This is a significantly more expensive reoccurring purchase than purchasing the UsefulBox on its own.