I have a ton of these adorable Bag Toppers in my store. Here is the tutorial for how to assemble. You can add popcorn, treats, cookies, or any special Halloween Treat.
The tutorial can be found here http://cupcakecutiees.blogspot.com/2012/02/bag-topper-tutorial.html
and you can find all the bag toppers in my store at www.cupcakecutieesparty.etsy.com