Jim has these things that are about 3" by 4". You bend them in helf, and they heat up. (Don't have a clue how they work except they an be used over and over.) If it will be getting cold, then I will ask Jim where he got them. They are called "EZ Heat"
I know they are in the desert, but thought it may get cold at night.
I know they are in the desert, but thought it may get cold at night.