I have loved making custom trick or treat bags for my kids the past few years.
They are quick, they can be tailored to any theme, and I think they add so much to the costume :)
When my daughter decided to be Jessie from Toy Story, my awesome sister gave me the idea to make an "Etch A Sketch" bag - since Etch is another Toy Story character...brilliant!
I created the basic tutorial for this bag here - when making this "Doggie Treats" trick or treat bag last year:
With this pattern you can make any design to match your child's costume!
I used grey embroidery floss to stitch "Trick or Treat" on one side of Etch, and "Boo!" on the other side - just as it would look on a real Etch A Sketch. The words at the top were painted on with a stencil I made with my Silhouette.
Here is my little Jessie Doll with her trick or treat bag. I love how it completes the whole outfit!