Traditional charcoal Pocket stove, Hand warmer – What's in my Winter pack

Have you ever been cored up in cold weather, freezing your hand while waiting for a Bus or Train sitting on a bench or elsewhere?
Well there is a solution for that, namely a cheap old style charcoal Pocket-stove puts an end to it with getting cold and stiff fingers.
Just lighten up a Charcoal stick and stuff it into your pockets to keep you warm and comfortable, specially if you're wearing only a jacket or coat that is not quite up for freezing conditions.

Mini-Pocket-stove:
https://www.jagd.de/mini-taschenofen_0015040.html
https://www.kotte-zeller.de/handwaermer-taschenofen-fuer-brennstaebe-wiederverwendbar
BasicNature Taschenofen 'Holzkohle': http://www.relags.de/?show=shop&artikel=221100
BasicNature Taschenofen 'Holzkohlestäbchen': https://www.relags.de/?show=shop&artikel=221200
Pocket handwarmer for fuel sticks: https://www.amazon.de/MFH-Handw%C3%A4rmer-f%C3%BCr-Kohlebrennst%C3%A4be/dp/B000VS8K2G/ref=sr_1_7?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=2G47RL12ERWX7&keywords=taschenofen&qid=1670940501&sprefix=taschenofen%2Caps%2C161&sr=8-7&language=en_GB