If you're looking for Halloween treat bags with no candy, you could use the "Watch Yo' Snacks" or "Happy Halloween" designs and fill with healthy options like carrots, veggie straws, or popcorn. Other Fun Items to for Halloween Treat Bag Fillers: 1. Create a Halloween s'mores treat bag by adding 2 graham crackers, a square of chocolate, and a marshmallow into a plastic bag. 2. Fill with little dollar store trinkets like plastic spider rings, homemade slime, or playdoh.