J Mann

“Smokeless Masonry Heater”

This gets my vote.

I have a pair of paw paw trees that I bought a couple years ago as seedlings. I put them in pots because I don't have room for them in my yard and want to take them with me when we move. They are about four feet tall now and I got my first bloom this summer. I don't imagine they will ever fruit while they are in the pots, but maybe. I bought them after reading about them and becoming intrigued. I just tasted my first paw paw last weekend and can't wait to get fruit off of mine. The flavor of the one I tried was like pineapple with a touch of banana.

In Seattle we have the Beacon Food Forest which I have heard is the largest such project in the US. They call themselves an edible arboretum.

Beacon Food Forest

I don't know if this is what you had in mind or even whether it is strictly permaculture, but it is a pretty nice addition to the City.