Annually observed on June 6th, National Yo-Yo Day celebrates a toy that's soared to international fame. The story dates back to 1928 when Donald F. Duncan Sr. encountered Pedro Flores, a Philippine immigrant, deftly maneuvering this toy during a San Francisco business trip.

Flores coined the term "yo-yo," derived from his native language, signifying "come-come." Within a year, Flores secured financing and produced over 100,000 wooden yo-yos. Duncan eventually acquired the yo-yo rights from Flores, founding the Donald F. Duncan company, leading to the widespread popularity of yo-yos across the globe. And from there, the rest is history!