In sum through the ages, I would mention Barbie dolls and matchbook cars
most toy-stores in most malls.
Ugly Dolls were the most popular toy last year.
Toy story
It is definitely arguable, but LEGO was voted a while ago the most popular toy ever invented.
The fjords.
LEGOs
iphone
Norway
car
It is somwhat popular, but soccer is the most popular sport in Norway.
Stuffed animals.
Zhu Zhu Pets