Pinhole camera? Great for photographing the sun, especially during an eclipse.
20170815/https://en.wikipedia.org/wiki/Pinhole_camera
20170815/https://eclipse2017.nasa.gov/safety
20170815/http://solar-center.stanford.edu/observe/
20170815/https://web.archive.org/web/20120113162827/http://resources.yesican-science.ca/trek/eclipse0602/pinhole2.html
You can also use binoculars to project an image of the sun, but do you really need an image that bright?