Your search "interchangeable" resulted in 2 Articles
This earlier Gakken camera kit allows you to switch from Lens to Pinhole and back from roll to roll, essentially making this a 2 in 1 camera.
DIY Project #12: Create a Transparent Bag with Interchangeable Design ended about 2 years agoAlong with our La Sardina DIY camera we’d like to present several DIY projects to inspire you. This project is a lovely tutorial on how to make your own transparent bag with interchangeable designs by Sylvia. Have fun!