Why did the bat go to the Halloween party?

Because he heard it was a real scream

Why did the goblin go to the career counselor?

Because it wanted to find a job that was a good fit for its skill set and didn't involve hiding under bridges all day.

Why did the jack-o-lantern go to the party?

Because it was a gourd time!

What's a ghost's favorite candy?

Boooo-ble gum!