Yule Folklore
Nisse of (Norway) Tonttu-Ukko of (Finland) also known as Tomte in Sweden is a tiny elf or wight identified with the winter solstice & Yule season. Nisse have four fingers, has pointed ears with eyes reflecting light in the dark, like those of a cat. Nisse may accompany the Júlbock/Yule goat. The Nisse enjoy morphing into large folks when needed.
These tiny elves or ancestral spirits once held a special status of soul of first dweller of a family farm. They would aid in clearing the property while living under mounds. Tonttu-Ukko and Nisse would evoke good fortune to the property owner.The Tomte of Sweden are known to ride the Yule goat called Julbocken during Yule delivering gifts to children.
Who knows? maybe they will protect your Bitcoin and crypto currency too.
Tomte riding Julbocken by Lars Carlsson (1921-2002), Sweden Public Domain.

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Source & References:
- John Bauer, (1912) Featured illustration Julbocken Wikimedia in public domain.
- German and Scandinavian Legendary Creatures: Elf, Troll, Tomte, Jörmungandr, etc. LLC Books 2010