I might write about this in greater detail at a later point, but, given it's an opportune moment to share this at the onset of winter (around these parts): I gave it a try, and yes, Hot Water Bottles really are the awesome, cosy, crazy efficient personal heating system claimed in this piece: solar.lowtechmagazine.com/2022

Any other year by this time it would be heating season for me already, even more so because I live in a rented, run-down old viennese flat with doors and windows so warped that you can almost peek through some of the gaps around the frame. Not so this year. I'm sitting at my desk in my still entirely unheated flat, delightedly chilling with my hot water bottle. :) Preliminary readings already point towards substantial efficiency gains (well, no surprises there), I'm collecting data and hands-on experience on a daily basis now. Takeaway: Try this at home!

Bonustrack: If you enjoyed this toot thus far, you might also be interested in solar.lowtechmagazine.com/2011 (more practical inspiration) and solar.lowtechmagazine.com/2015 (a wider historical and cultural perspective on all of this) and in following @rra and @cblgh, aka. the friendly folks who have been sharing this kinds of cool stuff before (cheers!). \o/

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Also I'm going to sew myself one of these :think_starry_eyes: pothies.co.uk/how-to-wear-your such a clever design, love it.

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