It is interesting to observe that throughout human history society has tried to engender gender into everyday things.
Girls and boys clothing
Girls and boys colours (pink and blue in the latter half of the 20th century in the west)
Girls and boys toys (cars and dolls)
Girls and boys words and speech patterns
Girls and boys cars (automobiles)
Girls and boys careers
Girls and boys sports
Girls and boys hobbies
Girls and boys room décor
Girls and boys technology (to a degree)
The only thing we have not yet separated, but have taken a darn few good stabs at, is food.
Probably because girls and boys, to a man, have universally said “Fuck your salad, stay the fuck away from my rare steak.”