Below are some comics that were drawn for a variety of reasons besides holidays.

April 2002: Visual Attention Lab comic

February 2003: In place of writing a 4,000 character essay for the Harvard-MIT Valentine's Email Match Up

August 2005: In celebration of getting a job as a pastry chef at Radius

April 2006: Color commentary
June 2006: Dragon boat race t-shirt illustration

March 2007: Birthday greeting