As if you don't have enough Halloween freebies already, here is another one! I was actually inspired to make this by a game my friends and I used to play in college called STAMP. This was long before the board game Scattegories came out. We just drew grids on notebook paper and made up our own categories. I adapted that game to create GHOST.
You could use this activity for a fun homework assignment, at a Halloween center or even at your class Halloween party. Be sure to give your students time to share their answers!