One of my favorite tiles is white penny round mosaic tiles. The look is classic and a great choice for any bathroom renovation. Eco-friendly cork alternatives come from a company called Habitus. The cork and grout can be custom dyed. A few examples of recent projects are pictured here. Check out more at:
I found these super awesome cork penny rounds via former House & Garden editor turn contributing glam.com blogger. Jen is always in the know about the coolest cork flooring.