Science teachers are going to love this Fun Friday item. On their website, Canon (the camera & printer company) provides directions for creating stunning paper models of many science-related items and ideas including dinosaurs, insects, globes, sundials, and even a hydroelectric power plant!
There are so many models here that you could allow students to make choices based on their strengths and abilities. You might also adapt by completing parts of the model for or with students. It would also be interesting to give some students the challenge of making a science-based paper model of their own.