Six genuine phenomena spanning four decades, sold almost entirely through word of mouth and in-person demonstration — no social media, and for the earliest ones, no television either.

Brought to the US by Filipino immigrant Pedro Flores in the 1920s, later built into a household name by Donald Duncan through traveling contest demonstrators — a pre-TV version of an influencer campaign.

Built on a 1904 game Elizabeth Magie patented to warn against monopolies, not celebrate them. 275 million+ copies sold since Parker Brothers' 1935 release.

A torsion spring that "walked" off a shelf, turned into a toy, and sold out its first 400 units in 90 minutes at a Philadelphia department store.

A Danish carpenter's company, founded 1932, that didn't start making its now-iconic interlocking plastic bricks until 1949 — now the single most valuable toy brand in the world.

Sold over 100 million units worldwide in 1958 alone, spread entirely through Wham-O demonstrating it by hand in playgrounds.

Over 1 billion dolls sold since 1959, still in production 65+ years later after repeated reinvention, most notably Mattel's 2016 body-type and diversity expansion.