Game or Activity for Halloween

Bean bag toss: Prop up a cardboard cutout of a Pumpkin with the eyes, nose, and mouth cut out, toss candy or bean bags or popcorn balls through it.

Put the Skeleton Back Together: take apart a a few paper or 3-d skeleton, have the kids break into teams and race to see who can put theirs together fastest.

Roll the 'eye'ball: race to see who can roll the 'eye'ball across the room fastest, with their nose and hands behind their back. (paint or draw eye on a white ball)

wrap the mummy: wrap kids in TP to make a mummy! race!

Pass the Pumpkin. Just like Hot Potato except you get a tiny pumpkin or just draw on an orange. Good game for that age.

Check out http://www.easy-party-ideas-and-games.com/school-hallowee...

there are some fun suggestions there, along with links to age specific Halloween activities. Good luck!

What about a Pumpkin Hunt?
My nephews birthday is in October and one year his mom had a pumpkin hunt. Instead of plastic Easter eggs, use plastic pumpkins. These already come filled:
http://www.terrysvillage.com/ui/browse/processRequest.do?...

Or you could have "Pin the Face on the Jackolantern". Cut out a large pumpkin from Orange poster board. Draw the striped of the pumpkin and then cut out the parts of the jack-o-lanterns face. Blind fold each kid and give them a chance to pin the face on. Whoever is the closest gets a prize and then have stickers for the other kids.