CuSTEMized engages, encourages, and empowers young girls in Science, Technology, Engineering, and Math (STEM) by providing them with tangible products and educational experiences that foster a positive scientific identity from a young age. Founded by a girl in STEM, CuSTEMized provides personalized STEM-related picture storybooks to encourage girls to envision themselves in STEM starting from a young age as well as introduce her to tangible female STEM role models. Our books can be created and downloaded on-demand for free.