Maybe you can do an event of everyone being a detective and they find ghosts maybe.
You need to press the down button (or s for some users who use WASD) if you see a ghost or
dracula.
Title ideas:
Find 5 ghosts: Detective
Find 10 ghosts: Ghost Hunter
Find 20 ghosts: Ghost Buster
Find 40 ghosts: Catcher
Find 60 ghosts: Devil
If you find a Dracula (only one every event round) you can get 10 ghost coins and
you can have a seller in the village that sells titles aswell. They could be dressed up as a ghost!
Titles for the seller:
20 Ghost coins: Six Six Six
30 Ghost coins: Demon
40 Ghost coins: Halloween
60 Ghost coins: Spy
100 Ghost coins: Spooky scary skeletons
Badges for the seller:
A badge of a ghost (120 Ghost Coins)
A badge of a dracula (140 Ghost Coins)
I don't know if this is good enough, but if you do choose mine,
you can add more details and things to the event!