nstructor professional development in physics often focuses on a linear path towards using research-based teaching methods. However, this does not reflect how instructors frame their teaching. Instead, we propose a professional development focus on supporting physics instructors' creativity in teaching. Creativity is important as instructors teach in diverse contexts and hold diverse educational values. Creativity research indicates that having a well-structured space to explore many ideas can support creativity. We investigate this for the case of PhysPort, a website for physics professional development. We present results from interviews with PhysPort users, to show how they joyfully explore, feel trust in materials on the site because they are research-based, and use ideas from PhysPort creatively. We also discuss how better site organization could support users' creativity more. Through this case study, we encourage designers of instructor professional development to consider supporting instructors' teaching creativity as a key goal.