My sequels

Felix Explores Our World (1999) sequelizes (and incorporates) The Felix Activity Book (1996). 

Vocabulary Cartoon of the Day Grades 2-3 (2010) sequelizes (prequelizes?) Vocabulary Cartoon of the Day Grades 4-6 (2005).

Bill the Boy Wonder: The Secret Co-Creator of Batman (2012) sorta sequelizes Boys of Steel: The Creators of Superman (2008). Well, Jerry Siegel and Joe Shuster do cameo in it...

The “Girl in the Video” interview series had a round 2 (2014)...following, of course, a round 1 (2013).

logo adapted by Leigh Cullen @DesignLeigh

The “kidlit authors read bad reviews” series launched with three videos and no certainty of continuation, but a month later, three more appeared.