I know it is early to start planning for school lunches but soon enough packing lunches will be a daily event. I posted on school lunches last year highlighting the school lunch resource of Whole Life Nutrition. They had great ideas for gluten free lunches but what I liked most was the handy chart that you print out. The chart helps inspire new ideas and makes sure that you keep variety in mind. I also found it easy to pack with this quick visual guide.
The original post is here
I have found some other resources to add to that one.
Structured around the idea of a Bento lunch there are lots of ideas and recipes
Again ideas listed as mains, sides and treats