I make a ton of turkey sandwiches (turkey on a bun) and freeze them. I pull one out of the freezer put it in the lunch box and it is thawed by lunch time. No need for ice packs. 
I also throw in a Yo Crunch, water, and a bag of chips. I have also taken a large pizza (we own a pizza shop) freeze the slices individually, put a frozen slice in the lunch box and it also is perfectly thawed by lunch. Cold pizza is yummy! One of my boys likes a bagel with cream cheese. Same idea, keep the bagels frozen, put cream cheese on it out of the freezer and it stays cold all day.
I also throw in a Yo Crunch, water, and a bag of chips. I have also taken a large pizza (we own a pizza shop) freeze the slices individually, put a frozen slice in the lunch box and it also is perfectly thawed by lunch. Cold pizza is yummy! One of my boys likes a bagel with cream cheese. Same idea, keep the bagels frozen, put cream cheese on it out of the freezer and it stays cold all day.
