When Margaret Renzullo wanted to green her house on Greenovate, she called in her friend and green interior designer, Kristina Spencer. Kristina's reaction upon taking a good look at Margaret's bathroom was involuntary. "Oh my god," she bellowed.
Renovating a bathroom with an environmental bent, of course, includes the omnipresent toilet bowl. You can opt for low flow or perhaps something more alternative - and don't forget the toilet seat. The result will not only be eco-friendly, but it will likely be wallet-friendly, too.