Exalted Crafter
Crafting tables can be inconvenient sometimes when at remote locations. It looks like the Crushed Dark Gems give the power to craft things from within your inventory! Attaching some kind of chest to it gives an easy internal inventory, even your Ender Chest seems to work. Power users might be happy with this item, since it can be bound to a hotkey. Using that same hotkey when the gui is open will clear your inventory, and using the hotkey with shift will balance all the items currently inside the grid.
Striking it with lightning seems to make it bound to reality so that it can’t be destroyed or disappear when dropped.