Please forgive me as I have NO idea about this whole school lunch thing!

I sent DD1 to her first full day at kindy the other day with -
Little pack of Tiny Teddy's
Vegemite Sandwich
Drinking Yoghurt
Vege Chips
Muesli Bar
Celery sticks

I knew it would be too much, but I would rather her have leftovers than be starving

Anyhoo, I get her lunch box back and everything got sent back except the vegemite sandwich and celery sticks, as it was deemed 'inappropriate' for school

So please tell me what am I supposed to feed her???

I *thought* I had packed a healthy lunch but obviously not??? I will be talking to the teacher tomorrow, but I would like some thought as to what to pack her for lunch tomorrow?

HELP!!!