End game item/inventory fix

Imagine an endgame/difficult item to obtain that gives the player the ability to use a 3x3 crafting recipe while not using a crafting table. Something along the lines of a philosopher stone. Of course, it should be difficult to obtain. Maybe it could be crafted or earned by preexisting mechanics or possibly a new “boss” or “area”. I believe having this ability would allow players to manage their inventory in a more creative way because it would encourage the player to carry “raw materials” while building and exploring. Building with stairs, slabs, and trapdoors, would not take up as much space if the player can craft within their inventories. Anyway, love this game. -long time player