Kaitendoh is going to release the 1/12 Scale Portable Toilet TU-R1W (1/12 仮設トイレ TU-R1W) miniature model from the "Mabell Original Miniature Model Series". Will be released in October 2017. Around 245mm tall, 4,900 yen.
——Description from Manufacturer——
A highly detailed model toilet series!
A 1/12th scale model of one of Hamanetsu’s portable toilets (Western Style: TU-R1W)! The door can be opened and closed, and all the details of the toilet itself have been carefully checked by Hamanetsu to ensure a faithful rendition of the real thing. Enjoy the details together with your favorite 1/12th scale figures to recreate all sorts of new situations!