Find the Flush Capacitor!
Perhaps such matters are not usually discussed in polite company, but this one was so clever, I just had to mention the unmentionable! (Yes, I know it isn't actually a bidet, but I imagine one could mod it!)
Humorous modifications to the commonplace lend a strange allure to this golden throne; for example, it has a laser targeting system pointing to the bottom center of the bowl, perhaps for use during (or after!) those rough zeppelin rides. A lighted control panel with multiple gauges and flush control button completes the ensemble.
A video of the device in action can be seen here.
Thank you, Patrick, for bodging analog technology to something even lower-tech, rather than the usual steampunk vice-versa. The dichotomy is refreshing. Literally.