Earlier this month I dug up one potato plant to see how it was doing. Here are its potatoes; the largest was almost baseball-sized, the smallest grape-sized. It was Yukon Gold and they were pretty yummy.
The deer forage mix I seeded in the experiment plots did in fact produce a lot of these things. (I think it's a turnip.) I know there are some larger than this. There have been reports of munching deer.
I made a removable accessory for the flatbed hand cart. I call it My Little Hayrick. It's for schlepping flax straw from the Great Wall of Flax Straw to the charcoal kiln, without using the Bobcat or the skid-steer.
It's made entirely out of scrap lumber and took me an entire afternoon to build. Sustainability is so labor-intensive.