I came across these pieces with GF foods you can purchase on Amazon; making it a good place to start:
The 6 Best Gluten-Free Snacks You Can Buy on Amazon, According to Nutritionists
* Health.com version
* People.com version
Grocery & Gourmet Food : Specialty Diets : Gluten-Free
Grocery & Gourmet Food : Snack Foods (questionable they are all actually GF even if the url is: amazon.com/Snack-Foods-Certified-Gluten-Free…)
Gluten free treats to sweeten up the holidays
Gluten-Free Girls, Rejoice! All These Delicious GF Desserts Are on Amazon!