ok this is very bad especially in a survival word. first you will need a random item in the number 1 slot in the hot bar. then you will need a non stack able item (pickaxe, sword etc.) in the number 2 slot in the hot bar. hold the random item in your hand. then press 2 and q at the same time. the game drops the random item AND the non stack able item BUT the non stack able item has been deleted. as in you cannot find it on the ground.
It works with every item if you switch and immediately throw