Noise, movement and household items: What are they judging?

For some, the Minnesota State Fair is all about competition. Every day this week, All Things Considered is asking: "What's being judged?"
Here are a few hints from the superintendent for this particular competition, Ron Kelsey.
Can you figure it out?
https://soundcloud.com/mprnews/judging1
Grow the Future of Public Media
MPR's budget year comes to a close on June 30. Help us close the gap by becoming a Sustainer today. When you make a recurring monthly gift, your gift will be matched by the MPR Member Fund for a whole year!
So. Judges ask specific questions of each entry: Does it look like a person? Does it make noise? Does it move? What sets it apart?

But does any of that help you figure out what it is?
How about this:
https://soundcloud.com/mprnews/judging2
It involves crops — and, as it turns out, kitchen implements, plastic caps from soda bottles and things like the head of a broom.
But there's one key item you don't want to see in the competition:
https://soundcloud.com/mprnews/what-are-they-judging-part-three-aug-29-2016
Haven't figured it out yet?
Click the gallery below to see for yourself.
Correction (Aug. 29., 2016): A previous version of this story misidentified the winner of a scarecrow contest. This post has been updated.