When I was in high school, I saw more people using 35mm film cannisters to hold marijuana than to hold 35mm film. I still think of drugs every time I see the little black vessels.
With 35mm all but eliminated by the explosion of digital cameras — at least in the world of most teenagers — these small containers will soon become drug cannisters and the people who use them to store their film will appear as the quaint repurposers of technology. It is only the illegality of marijuana that will keep people from speaking openly and explicitly about this transformation.