Here's a simple snack bag I put together last year for our play group's trip to the pumpkin patch:
I used brown paper lunch bags and tied them with Halloween ribbon I found at Michaels for $0.99 a spool. I designed the tags and menu cards and printed them on regular white card stock. The "Muenster Sammies" are apple butter and muenster cheese sandwiches on rye cut into a ghost shape, wrapped in parchment paper, and tied with kitchen twine. I found this recipe for Pumpkin Spice cookies which were easy to make and DELICIOUS! Lastly, I added one of my daughter's favorite snacks - veggie sticks for some nice color. Et Voila!