While you can technically use various types of screens with projectors, it's highly recommended to use a high-quality projection screen with an anti-reflective surface.  These screens are designed to minimize light reflections and maximize image clarity, providing the best viewing experience. Using a dedicated projection screen ensures that the projector's light is efficiently reflected toward the audience, reducing the chances of light bleeding or image distortion.  While some may opt for alternative surfaces like walls or makeshift screens, investing in a proper projection screen is the ideal choice for optimal image quality and a superior viewing experience.