Zipp was head of In The Trenches Productions, where she produced, directed, acted in, edited and wrote many short films. In the late 1990s, she was co-chair of the Los Angeles-based group Actresses @ Work for actresses aged 35 and older. She ran an entertainment website for women over 40 with three other women, becoming the West Coast writer/editor/producer and the third tomato for The Three Tomatoes website, writing "A Lifestyle Guide for Women Who Aren't Kids" and their weekly newsletters.
