Jaroslav Juřica created Rubikon, a paper cut-out that becomes a functioning camera (camera obscura) after gluing together. You can find the template here.
“Nowadays, when our world is broadly digitalized and cameras are common parts of mobile devices,experimentation with classical photography has become paradoxically even more expensive than it used to be. Therefore, by introducing Rubikon, I would like to mediate these principles in a funny and easy-to-use way. Nevertheless I would also like to offer mass photographers an alternative way not to take just gigabytes of pictures but also some shots with unique atmosphere and specific creative approach.”
Passion For Paper & Print 