Eclipse 2017
Good videos on how to make your own eclipse viewer
Pinhole projector: https://www.youtube.com/watch?v=Y6nBGuzLJDE
Paper/foil: https://www.youtube.com/watch?v=iwt6VGJGClY
Box method (Maybe the easiest/best): https://www.youtube.com/watch?v=71SxRG10sLc
Pinhole projector: https://www.youtube.com/watch?v=Y6nBGuzLJDE
Paper/foil: https://www.youtube.com/watch?v=iwt6VGJGClY
Box method (Maybe the easiest/best): https://www.youtube.com/watch?v=71SxRG10sLc