Building a Johnson-Su Compost Bioreactor might interest you. The original design is quite large, but there are plenty of smaller, modified designs that can be found online.
An inexpensive course on building one (and why you should) can be found at the link below. I took it, and highly recommend it.
https://homefoodsystems.com/courses/simplified-bioreactor-composting/
#grownostr #compost