My personal sleep item: the Yogo Bara electric foot warmer, I recommend it.

Hotition, which I bought based on a recommendation from someone nearby.

Yogobara company has introduced items for winter. A colleague says that if you turn it on while sleeping, your feet stay warm and you sleep soundly. I tried it myself and it’s really great. Especially since it automatically turns off if you fall, so I can sleep without worrying. Definitely recommended.