A recent discussion was asking how elderly people could heat food during an electrical outage without using an open flame. I found several companies make survival type meals that heat in their packaging after you add water to a chemical in the outer envelope. They tend to be limited as to choice and are pricy at $10 or more per meal. I've been googling around and found several cookers that heat your food to around 200 degrees F. There are several systems-heat packets for this one are $1.49 each. A medium (28oz) cooker is in the $30-35 price range.

System here: https://www.amazon.com/Barocook-Rectangular-Flameless-Cookware-40-Ounce/dp/B00CRBWLI4/ref=sr_1_2?dchild=1&keywords=barocook&qid=1626720092&s=sporting-goods&sr=1-2&th=1&psc=1

Other systems and videos here: https://www.google.com/search?q=flameless+cooking&rlz=1C1GGRV_enUS800US800&oq=flameless+cooking&aqs=chrome..69i57j0i67j0l6j0i67j0.8512j0j7&sourceid=chrome&ie=UTF-8

Helpful for forgetful seniors but as the climate changes we should all consider this cooker as a second heating source for food...