The cereal companies ran a boatload of non-sports kid's clubs in the 1930s.
Post Huskies didn't last long enough to sponsor anything but Lou Gehrig's HUSKIES CLUB from 1936-37.
Quaker Oats had the BABE RUTH CHAMPIONS from 1934-36 while they also sponsored the JOE E. BROWN BIKE CLUB during the same years. SHIRLEY TEMPLE also appeared on boxes of Quaker Oats in 1935.
Post's Grape-Nuts Flakes had the DIZZY DEAN WINNERS CLUB running from 1935-36 and also sponsored the JOE E. BROWN CLUB in 1936. Brown was as famous for being a baseball fan as for his movie career (he made many baseball-themed movies). More importantly, Post sponsored his popular CBS radio program. In 1936, Grape-Nuts sponsored a radio program called "Hoofbeats" starring famous B-Western film star Buck Jones and the BUCK JONES CLUB was launched. Dizzy Dean Winners were notified by mail that their memberships were transferred to the Buck Jones Club.
General Mills' Wheaties sponsored the JACK ARMSTRONG radio program from 1933-51. Unlike many radio shows, there wasn't a Jack Armstrong club but numerous premiums (many sports-related) were issued and sports stars appeared on the programs by proxy and on box-backs by photo to plug Wheaties. General Mills shipped cases of the cereal to big leaguers and was a major sponsor of the minor leagues.
The cereal company offerings are legion, as they say. Here's the BUCK JONES CLUB flyer...since you could get a baseball, it's fair game to post...
The DIZZY DEAN WINNERS CLUB flyer...
Boxtops were yesterday's gold to a kid...
