Ballots, too. Put a "1" in the box of the desired candiate. Number from "2" onwards if you like. Instant Run-Off. Vast majority of people figure it out. I counted at a booth once. Every ballot sheet must be also accounted for, used or not.
I don't know why pencils, not pens, but that's what the Australian Electoral Commission provides. Maybe they're cheaper than pens.
Wade.