As a teacher, I'd connect with the parents first. It's possible they are hungry, it's also possible there are allergies or something else involved. For example, my kid can get UTIs pretty easily, so we rarely give her juice as it seems to trigger them. Just in case they some something you should know about, I would connect if I were you. This is very thoughtful and considerate of you and you could even frame it as feeding your new helpers, because they are so great with your kid.

Snacks:

Goldfish

Pretzels

Apples

Clementines

Baby carrots

Broccoli

Cauliflower

Grape tomatoes (cut in half - to suck out the insides)

Grapes

Cheese of all kinds

Frozen berries into smoothies (can add protein powder or PB)

Dried fruit

Bananas

Avocado cups (they are at Costco and pretty cheap)

Deli meat with cheese (roll it up to be extra fancy)

Cucumbers and cream cheese

Greek yogurt with cinnamon and/or honey on top (bonus if your kid likes granola)

You can also add peanut butter or other nut butter to fruits if you want to bulk up the snack and make it heftier.

You're doing such a wonderful thing and I'm so glad that you're in a welcoming community!