Along with its long-form and short-form shows, the PBS KIDS Sprout channel aired a variety of bumpers and commercials that advertised itself, on-demand, and its website.
The bumpers and commercials are different from interstitials because they were made specifically to advertise Sprout. By comparison, short-form shows like The Many Adventures of Mr. Mailman and Pajanimals were "mini" TV shows about unique characters and storylines, not made to promote Sprout.