Daycare

My LO is starting her first day of daycare and we have to provide lunch, what are some good suggestions to pack, and how do you pack them? I have one of her NUK suction trays, and I made chicken nuggets with peas and carrots that has a top to it for today’s first day. Im not sure if it’s ideal, but will definitely see when we go. Any suggestions for a thermos (for an 18 month old), containers, or how to pack something and what would be ideal to make would be greatly appreciated! We also give her fruits during lunch, but if it’s bananas or apples, I do not know how to pack them as they will start to brown.