Example: I have Book of Scripture. While carried, the character gains 1 Knowledge and 1 Sanity.
Can this happen?
I'm on a tile where there's a benefit to gain by making a Knowledge check. I make the check while I have the item.
I then DROP the item.
The next player comes onto my tile, PICKS UP the Item (to gain the bonus), makes the check then DROPs the items.
Rinse and repeat.
In BAHOTH, you can't do this since you can do ONE thing with each item during your turn. But in BL, it's one use of each ACTION word per turn.
You can still only do one thing to an item per turn, because you cannot perform actions on Used items unless the haunt instructs you to. That means that you cannot DROP a used item, and you pick up items used.