WineBaa is a kind of muzzle which allows the sheep to graze, but only stuff on the ground. It can therefore replace herbicides in wineyards (orchards), and produce meat (among other benefits, like soil health) at the same time.
In the comments of the video, someone states that when you order you do not get your stuff. I don't know. Anyway, the tool looks interesting, and not that difficult to make out of wire mesh. The balance may be tricky, though.