The Kin-der-Kids and Wee Willie Winkie's World were early newspaper comics by painter Lyonel Feininger and published by the Chicago Sunday Tribune during 1906–07.
Similar in form to Little Nemo and the later Sunday editions of Krazy Kat, most of Feininger's comics occupied a full-page and were rendered in color. The Kin-der-Kids were published in Tribune papers beginning April 29, 1906. Feininger's second feature, Wee Willie Winkie's World, was published concurrently with The Kin-der-Kids from August 19, 1906, until The Kin-der-Kids's cancellation on November 18, 1906. Wee Willie Winkie's World ended three months later, on February 17, 1907. The series' short existences have been attributed to several causes, including Feininger being unable to produce two strips of finely detailed artwork on a weekly schedule, and personal conflict between Feininger and his publishers.
Much like The New York Herald's Little Nemo, Tribune publishers envisioned The Kin-der-kids as a relatively sophisticated alternative to the comical, and at times violent, antics of Happy Hooligan and The Katzenjammer Kids, comic strips published in newspapers owned by Hearst and Pulitzer.
The Kin-der-Kids featured an ongoing story about the three Kin-der brothers who, along with their dog and a mechanical boy, sailed in the family's antique bathtub to explore the world. The story implies that the Kin-ders sailed for a specific reason: early on they receive a note – unseen to the reader – from Mysterious Pete which contains instructions for their journey. These instructions and the purpose of their journey remain indeterminate for the life of the comic.
The primary cast of The Kin-der-Kids were introduced to Tribune readers before the commencement of the comic strip's regular publication. On April 29, 1906, the Tribune published a special "All About the Tribune's New Comic Supplement" section. The cover featured a caricature of "Uncle" Feininger suspending the cast marionette-like on strings. The "New Comic Supplement" introduction also included a page of color portraits of the characters, and inside the supplement were prose biographies of the characters.