Hello, I am in desperate search for the small plastic pots that camera films are kept in. I need them for a Science assembly we are doing where we are doing the experiment with water, an andrews antacid tablet and it makes the lid pop off. Does anyone know where I can get these pots? I have looked on the internet and in our resource books in school but no luck. Or if you can suggest anything else that might work just as well. Thank youfor any help you can offer!