How do you manage hot/cold lunches?
DDs have been interested in bringing hot lunches in their thermoses and I've just been jamming them into their planetbox lunch bags (not ideal) along with an ice pack for their yogurt, cheese, fruit, etc. But I don't think it's working - the ice pack cools the thermos down so that the food is only lukewarm by lunchtime. How do you pack lunches where you have both a hot a cold component? Or do you just not? I almost feel like I need to get different lunch bags for hot lunches vs. planetbox lunches...
How do you manage hot/cold lunches?
Generally I don't do hit and cold together. Sometimes I will send a yogurt stick (frozen) with a small tubular ice pack, wrapped together in a paper towel and put as far away as possible from the thermos. We use PBK retro lunch boxes though. Inside is usually a lunch bot with silicone muffin cups to make it "bento."
ETA: I don't think my kids care if the food is luke warm. Do you preheat your thermos with boiling water for 15 min?