I found a Glitch that I don't think he ment to put in, If you have a box in your hand and you pause, then move into another room and then unpause, the box teleports to you.
thats pause glitching its literally used in like 5% of the game
i use it 100% of the game
i used it 0% of the game
its intentional
oh yeah that is unintentional, i made it with all 5 boxes using that method
that's an unintentional use of it, it is meant to exist though
I wanna see :|