
Hi mrsbrainiac
I think you will be looking for gluten-free recipes that also meet the other allergy restrictions.
Gluten is a protein found in wheat - so all gluten-free recipes will be wheat-free. Gluten-free (and therefore wheat free) flours include sorghum, millet, potato flour and starch, tapioca, buckwheat (misleading name as no wheat here), quinoa, almond and other nut flours/ground nuts/nut meals, rice flour, arrowroot
The problem with buying a ready blended gluten-free flour is that it almost certainly will include cornstarch. I think you will need to blend your own gluten-free flour and there are a heap of recipes on this site for your to look at. ( I can't get the recipe sorter to work today.....but will find you a suitable recipe later)
You will also need to replace eggs used as a binder in a recipe- so may be able to purchase an egg replacer (but will need to check that it is corn-ree...so no maize, cornstarch, cornflour included in ingredients) or use a home made substitute such as 'flax eggs".
Most gluten-free purchased baked goods will be out for you.....as they most likely will include eggs or corn . It would be a good idea to do some baking and freeze in individual wrapped serves.
I think for snacks that are quick to grab that you will need to rely on fruit, vegetables (like carrot sticks, celery sticks, mini tomatoes) and maybe Plain kettle chips could even be suitable. Dried fruit or a trail mix (but loads of schools now are nut-free), gluten-free cookies or gluten-free muesli bars (though again you will need to check that there is no corn present)
If you find gluten-free and vegan products then you know they will have no wheat or eggs included. You then need to check for corn-based ingredients
I'm heading off to work now, but will be back later to find some recipes that might be suitable and a flour blend for you to try