I just saw a 12 gallon freezer tote bag for $10 at BJs. Its not a typical square/rectangle shape like a foam cooler would be. Its shaped more like a pizza box tote bag, and has that silver insulating stuff inside. I'm just looking to keep leftover deserts and sodas cold overnight, and the fridge swap I was in went belly-up. If I put ziplocs of ice in there, would it keep leftovers fresh? Or should I just ask for an extra bathroom pail, line it with plastic & put the ziplocs of ice in there? The food would in plastic or something. I believe this bag is meant for keeping groceries frozen/fresh in the car if you don't intend to bring them home right away.