The Danish "julehjerte" is apparently a Danish/Northern Europe Christmas tradition (at least according to Wikipedia). But hopefully people outside this region will also be able to enjoy this variant:
I have been doing "julehjerter" ever since I was a small kid, and every Christmas try to do something different with it. As seen above, this year I decided to combine the tradition with the MariaDB logo, and I am frankly quite pleased with the result :-)