We recently became homeless and ate sleeping in a small rv right now. Anyone have any ideas on how to keep it warm in here at night with no electricity. We have a generator but no money for gas right now. I was using the oven but we also ran out of propane

Any advice would be greatly appreciated!!

Picking up an f250 soon. Looking at alliance valor, Jayco seismic, grand design momentum and KZ spotter x. Toy hauler is a must. Bumper pull is what I’m after mostly. They each have a model or two I like. All roughly same price. I will be living in it for weeks/months at a time and traveling all around the US on a regular basis. Been reading reviews like crazy. Looking for some input that may sway me toward one or the other or completely turn me off on brand. I’m a newbie and some honest help is greatly appreciated.