Gregory's ServerOld and busted:
Toilets
New hotness:
Luxury poop closets
In all seriousness, I quite fancy this layout for a composting toilet and might probably do something similar in my own cabin
I'm working on a separator design that I can 3D print for this purpose
The basic premise of a composting toilet is actually quite simple. The separating variety has extra plumbing, but that's about it
This is a more complex arrangement, but folks have used buckets for this as well. It all depends on your comfort level and available space