Great article from Low-Tech Magazine about hot water bottles for heating people, not spaces. I use a hot water bottle for much of the winter and it's much more effective and cozy than trying to use the furnace to heat my ancient and drafty apartment

https://solar.lowtechmagazine.com/2022/01/the-revenge-of-the-hot-water-bottle

#hotwaterbottle #sustainability #lowtechmeagazine