We wanted to do a little something special, but not over the top for our guest bathroom. I found some beautiful travertine mosaic tiles at Lowe's that matched perfectly with the porcelain. It was a simple design, but I think it adds something special to the flooring. After living on concrete for a while, the boys were not excited about giving up their "industrial" look. They were not convinced that the flooring would go with their room theme. Once it was all in, they were OK with it.
So that leaves only one room with carpet. The toy room (which also functions as an additional guest space and gaming room). It will go when we replace our laminate flooring in the great room. Here's hoping for more ineptness (fingers crossed) by our mortgage company.