There is lot of good stuff available in the openbazaar market. There are nice hand warmers available with built in battery bank. Those can also be Christmas gifts.  https://duosear.ch/f90972cd3481eff542806f970ba5adb893c307b7/listing/5d419b93a373e4dacb93b2699217d79ed647300a

Selling some other electronics stuff here:
https://duosear.ch/?q=yorkton%20imports

Good to see the market populating with new cool stuff.
My Store URL: ob://f90972cd3481eff542806f970ba5adb893c307b7/store