I love the fact we are doing our exhibit on bathrooms and in particular the evolution of toilets over history and spanning over different cultures. Here are some links to websites that i found that might be helpful:
A toilet bowl from Weald and Downland Museum
I choose this image because of the decoration of a now blank object. In the 19th century inside toilets were a privileged that only the wealthy had so they were a symbol of class. The concept of adding adornment to a toilet if a concept that we have lost over time.