This article shows some small scale grain harvesting devices. They also sell small scale grain drills, mini-balers and some cool looking walk behind tractors.
But for a very small patch of an acre or less, it seems that a scythe, then hand threshing with a stick and a tarp might be the way to go. That's how they did it for thousands of years. I understand it goes pretty fast if you learn how to use a scythe. The tools would cost around a hundred bucks and you would get a bit of exercise during harvest season at least.
http://www.ferrari-tractors.com/smallscale.htm
But for a very small patch of an acre or less, it seems that a scythe, then hand threshing with a stick and a tarp might be the way to go. That's how they did it for thousands of years. I understand it goes pretty fast if you learn how to use a scythe. The tools would cost around a hundred bucks and you would get a bit of exercise during harvest season at least.
http://www.amazon.com/Seymour-SN-9-Aluminum-Scythe-Snath/dp/...