Some lucky traveler on an airplane in Australia might have picked up a very special air sickness bag today, courtesy of comic book artist Brian Stelfreeze today. It is not as weird as it sounds, though.RELATED: Black Panther Director Ryan Coogler Says Marvel’s Current Comics Influencing His FilmStelfreeze was able to complete an illustration of Catwoman in the time between setting off from Adelaide and landing in Sydney using an air sickness bag as his canvas. Rather than take his handiwork with him, Stelfreeze left the drawing on the plane for some lucky person. It would be quite the find -- Stelfreeze even autographed the illustration.

Stelfreeze has been in the comics industry since the mid-1980s and was one of the founders of Gaijin Studios, which was one of the longest-running freelance comic book artist collectives, having run from 1991 to 2010. More recently, Stelfreeze partnered with Ta-Nehisi Coates in 2016 to revive the Black Panther comic book series.

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Stelfreeze is garnered recognition for his cover art, though, which includes over fifty entries in DC Comics’ Shadow of the Bat series. Shadow of the Bat introduced readers to characters like Jeremiah Arkham and Victor Zsasz.