Help Me Out With Snacktime Protein Ideas

[Pestle]

Got 2 kids with lactose intolerance (1 full-time)
3 with severe egg allergies (1 full-time)
1 with severe fish and severe nut/peanut allergies...

[Controlled Chaos]

My new little one is vegan. I serve almost all vegetarian meals so that's not too tricky but we eat a lot of yogurt, cheese and eggs. Do you know any...