http://www.blackpinesports.com/turbo-toilet-blue

[Note: Despite the appearance in the picture, the seat on my toilet is level.]
This is all so my sister has a bathroom in the middle of the night instead of walking to the campground bathrooms. We're leaving on a cross country trip in a week and I DO NOT want to have to get up in the middle of the night to be an escort.

Anyway, sis tried the new "litter box" out a couple weekends ago when I set the camper up for her at a nearby park for her dog agility competition. She says it works quite well as long as you don't use the bags that came with it, as those apparently are prone to having holes. Oops. Thankfully she was double bagging as I'd recommended. She switched to using the spare medium sized trash bags I provided. Her verdict is that it's a great addition to the camper for nighttime use. For our trip I decided to add a pop up privacy tent. It's a standy with enough space for indoor potty use but this sharing space with your sister thing has its limits.
Cali or bust!!