1955 photo of yo-yo practitioners Hymie Bofref, Mary Lou Smith and Stan Smith. First made popular in the 1920s, yo-yoing remains a popular pastime of many generations and cultures. It was first invented in ancient Greece. The San Diego Yo-Yo Club remains active and usually meets the second and fourth Saturday of each month from 3:00 p.m. to 6:00 p.m. in Balboa Park in front of the Reuben H. Fleet Science Center. They welcome everyone and suggest items to bring - yo-yos, diabolos, tops, juggling, poi, or any other skill toy.