Commenting to follow for ideas as well
https://www.yummytoddlerfood.com/toddler-lunch-ideas-for-daycare/
You can make a lot of things with a muffin tin. Eggs don't have to be breakfast only. Energy balls using sunflower butter, oats and a bit of honey ( honey is a good sweetener ingredient and honey is healthier than sugar)
Hard boiled eggs Mini quiches
Try out new foods at home so you know what kid likes and dislikes before you send it
( most daycares are tree nut And legume free ( well peanut, but technically speaking from a gardening standpoint if you were growing peanut, it's a legume not a nut) .... So anything that's peanut based, id do it with sunflower butter )
I’m sure you’ve done these but in case you haven’t.. these are our current heavy rotations: Pineapple and cottage cheese Yogurt and fruit Apples and peanut butter Green smoothies