Divinity: Original Sin Halloween Update

Divinity: Original Sin is one of my most-anticipated games at the moment, and it just got a bit spookier thanks to Swen Vincke's new blog update. Although he admits to not understanding Halloween celebrations too much, the developers have decided to add in jack-o-lantern helmets into their upcoming game.
I do like the pumpkin thing however so much that we did this with them in Divinity: Original Sin and now we're looking for some inspiration as to what special powers this particular item combination will give you. Anybody who comes up with an idea that gets implemented, gets a Larian pumpkin !!!
What sorts of bewitching ideas can you come up with? While we're not quite sure what a "Larian pumpkin" is just yet, coming from Larian, it's got to be good.