There are simple things a person can do.
I have bunches of old gatorade bottles filled with water in case the water goes out, which I admit it very rarely does around here, I’m near Seattle.
Take a quart of water before you go to bed, put it on the burner, get it up to about 150 degrees and dump it in a gatorade bottle.
You could turn the heat in your house OFF for the night and that’s enough to keep you warm till about 3 in the afternoon next day.
Simple stuff.
I'm glad mine are grown and gone.
/johnny
Not to be pedantic, djf, but that’s only 200 Btu/h averaged over an 8 hour nighttime. You must have an extraordinarily air tight house with foot-thick well insulated walls for that puny heat output to keep you warm.
There isn't an OFF switch for the heat in this house. No central heat or cooling. I fix it as I am able.
But, you are right. From 5am to 3pm... life is pretty easy.
/johnny