Hello all. I'm tutoring a high school student and am having trouble with a seemingly simple science project that was assigned: How to remove table salt from water. Having graduated as a Chemical Engineer, I said distillation! But the problem statement says you can't be that boring. Then I said reverse osmosis, thinking that would make for a great presentation (lots of good calculations to do and theory to discuss)... until I found the student has to actually perform the desalination process for the class. And RO units aren't that easy to build or operate with household materials. So know I don't really know. I'm thinking some kind of liquid-liquid extraction or forced precipitation of the NaCl. Any other "at home" desalination methods you can think of? Thanks!