C.C.
Another fun thing to do if there aren't too many children is to make a small pumpkin for each child. Cut the top off and scoop out the inside and fill it with butterscotch, chocolate, or vanilla pudding (which you can color orange or black) and fill the pumpkins. The kiddos can eat this with plastic spoons that you can usually get in a halloween theme!
You can also melt white chocolate in a pan and drip it into ghost like shapes on wax paper. Add tiny chocolate morsels for eyes and put in freezer to harden. After an hour or so you can peel them off of the wax paper for fun little ghosts snacks! :)
And I'm not sure how high your "gross" meter is...lol. But another fun thing to do is peel grapes and cherry/grape tomatoes and put them in a bowl. Serve each child eyeballs for a great snack! (**Hint to peel them easily, just cut a small X on the end of each grape or tomatoe and put them in BOILING water for about 20 seconds. After this the skin will literally slide right off!!) Good luck and have lots of fun! :)