We don't have halloween in Iceland, but my best friend is Canadian. Her family always celebrates, and they invite me :w00t:
But we can't really go trick'n'treat-ing, as most people here don't even know there IS halloween.
Last year my friend and her sisters invited few friends, and we all watched horror movies together. Her mom baked something she called "brain-splaches" (Rice krispies cookies with red colour and melted marshmallows

).
Weeeee