The yellow dye is called “Indian Yellow”, which means blockheads know about India, a country on Earth.
The North Pole looks like a candy cane, and the hat of warmth looks like a Santa hat. But candy canes and Santa hats are Earth Christmas traditions.
Dropbears, unicorns, and cave trolls are Earth myths, so the first blockhead who went through the portal was inspired by Earthen tales.
Tin foil hats were invented by Earth pop culture.