Stonum was a founding member of the Chicago chapter of
ADAPT, a disability rights organization then known as American Disabled for Accessible Public Transit. She was on the board of the Disability Arts and Culture Center at the
University of Illinois, and served on the boards of several advocacy organizations. In 1988, she was part of a group of American disability activists who visited Cuba and met
Fidel Castro. The suit was settled in 1996, with the Chicago Cubs agreeing to increase the number and accessibility of wheelchair seating spaces, parking, restrooms, and concessions at the ballpark. Stonum owned and ran a graphic design company, Design for All. Her t-shirt design featuring an evolutionary diagram with the caption "Adapt or Perish" is part of the
National Museum of American History's collections on the disability rights movement. The same graphic by Stonum was featured in the 2018 show "Chicago Disability Activism, Arts, and Design: 1970s to Today" at the
University of Illinois Chicago. == Personal life ==