Right now? Space to grow food. I grow tomatoes, lemons, basil, cucumbers, and strawberries in the basement. Most of that isn't good for chickens or worms, though. I'd need to scale my food production to a bigger variety for the system to feed itself so it does still take some input from me other than sweat equity.

The thing I started doing all of this for was renewable compost, though, so at least that goal is met. I also don't give away my yard trash anymore (leaves, clippings). They go into the compost piles and get spread across the yard a few months later. My question moreso centered around fertilizer - why do we keep needing synthetic fertilizer if we can produce renewable compost chains?