A few more Halloween ideas for you...
We made 'ghosts in the graveyard' for dessert. (pudding/cool whip mix with crushed oreos and 'tombstones' for decorations) Google it... you'll find several recipes to choose from.
The kids love it!
We also do this every year... but I don't have a picture.
We buy dry ice from the grocery store (get there early... it sells out fast)
and put it in colored water (or just water).
The boys love playing with the 'fog' that comes off of it.
They call it secret potion.
We also use the dry ice to make homemade rootbeer.