I am on a trial diet for food sensitivities and cannot eat gluten or casein for the next few weeks. I have been doing okay with both meals and snacks for the most part. Where I need help is that I return to work this week and I am a preschool teacher. My classroom has nut and egg allergies. So, I am looking for snacks that are gluten-, casein-, nut-, and egg-free! I do have access to a refrigerator to keep items cold, but I do not any on-site prep time (could do prep at home in the morning). Please help me with any ideas you might have!