Try and throw something at the crown
You think that if you throw something at the crown then you might be able to knock it over to the side of the slime pool. That seems like a much safer plan than going over and just grabbing it.
The problem is, what should you throw? You can see a lot of rocks on the ground that would probably work. Or you could use the rope and grappling hook from your backpack and pull the crown to the side of the pool instead (although it will probably take you ages to wash all the slime off the rope and hook afterwards).
What will you do?