Here it is:Actually, I have 2 structures. And one of them IS a plant stand, that I had sitting in its original box, for something like 2 years
It is tie-wrapped to the pen walls.
The other is this:
https://www.amazon.com/gp/product/B08RS8MX8V/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
If you look carefully you can see two black zip-ties attached to the top horizontal brace. They are also looped around the cattle panel frame.
Thanks for the idea!