Had a random idea for using these deli containers to create a two-chamber-in-one sort of design. It actually seemed to work out pretty well. I found the bottom diffuser from these things called "Bobbles": http://ilovefreshmusic.files.wordpress.com/2010/03/water-bobble.jpg They are used to filter drinking water, but the carbon insert can easily be removed and they make perfect diffusers! VIDEO IS HERE!!
I expected to open this thread and see some terrible homemade device, but this surprised me. Well done.