One of the more interesting items that I've seen on FB Marketplace

https://www.facebook.com/marketplace...3029644231072/

City Compliant 330 Gallon Compost Processor IBC Tote
Portland Oregon

Here is a composter/'composting processor' made from a 330 gallon IBC tote steel pallet container, with a discharge valve at the bottom. It was used by the last occupants of my house, who had a city approved composting toilet. Though I wasn’t as good of a person and switched to a normal toilet.

It was previously approved by the city for human waste, and compliant with the IAPMO (international association of plumbing and mechanical officials) / ANSI Water Efficiency and Sanitation Standard. I assume you'd have to go through the same process to get it approved for this use at any other address (talk to the city). But it's great for food/yard waste composting as well. It has a ventilation/aeration system built in (see photos).