Complex sentence: He produced approximately 1,000 of the "drawn-on" dolls, placed them in clear plastic bags that included the comic strip, and sold them at flea markets in the San Francisco Bay Area in 1992.
Split into simpler sentences: He produced approximately 1,000 of the "drawn-on" dolls. Walker then placed those models in clear plastic bags that included the comic strip, and sold them at flea markets in the San Francisco Bay Area in 1992.