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  • 🔗 The Revenge of the Hot Water Bottle

    Imagine a personal heating system that works indoors as well as outdoors, can be taken anywhere, requires little energy, and is independent of any infrastructure. It exists – and is hundreds of years old.
    Reminds me I should use my yutanpo more. But truth be told, Sophie always sleeps by me feet, so I already have a Sophie-tanpo.