My idea would be a water thermos for my car, made by Britta, w/a tiny water filtering system within, so anytime I am out and about I would be able to fill the thermos and be assured that the water would be safe. The thermos could come with disposable insert filters that would screw into the bottom. I often have to forgo drinking water because I am unsure of its safety. A Britta water bottle would put my mind at ease.
I must say how wonderful the personal water bottle filtration system is! I love my new water bottle and my water intake has increased dramatically from it...but, it could be increased even further!
My idea is to make a Brita pet water bowl for my pampered pets. So they can have clean water that taste the way it should.