Polished Potterheads - October 2020

Surprise! I haven't done HP nail art probably since last year... but I haven't been kicked out of the IG group Polished Potterheads so I finally decided it's time to re-join the monthly nail art challenges! October's theme is "Halloween at Hogwarts" which at first glance is like YEAH but then..we struggle for inspiration. What exactly sets a wizarding Halloween apart??