The Sharpen website provides design challenges and activities to help people practice and improve their skills. It contains generators that randomly produce prompts in categories like branding, marketing, product design, and STEM education. Design teams and educators use Sharpen to assign practice projects. The site also offers custom generators and lesson packs that can be integrated into classrooms or hiring processes. In summary, Sharpen aims to spark creativity through open-ended challenges across various design and STEM disciplines.