After joking about this at work, I landed on the most cursed scale I could think of… pT = log10 FPW.
Pros: no bottom to scale, increasing negative values asymptotically approach absolute zero. Water freezes at zero.
1 pT is almost exactly the melting point of iridium. Lightning bolts are around 2 pT. Boiling points of neon and helium are in the neighborhood of -1 and -2.
An electric blanket is one of the best ways to warm up when you’re “chilled to the bone”. Layer them between normal blankets to make the most of the heat and keep them clean, and you can get whole body heat for a tenth the cost of even a little space heater.