There's a house a bit further down hill from where I live... when someone gets close to their door, a hidden speaker screams for like 5sec. It's really loud, and it happens every 10 minutes. The kids are terrified lol.
Otherwise, I'm not doing anything special. I killed Monoculus though, does that count?

EDIT:
Oh! But I re-designed the site for Halloween! (Took me 5min, I know

)