Yes, this is it; my most untidy breeding greenhouse. Benches built "Ralph Moore style", just 2 X 4 frames with wire mesh surfaces laid on top of construction blocks. It does the job though and it was inexpensive to make. The floor is bare earth covered with black plastic weed control fabric. As you can see, its a metal hoop house with poly stretched over it, also relatively inexpensive. I bought the best grade of poly available because I found I can get at least 8 years use out of it. Everything is watered by hand, although I have the infrastructure available to set up automatic watering if I want. I think this setup is a good compromise between functionality, cost, and durability.
If you click on the image and look closely, you can see I have hung a few tags here and there already. (Upper left quadrant: I have pollinated 105-04-08 with a few things) Its far from glamorous, but it gets the job done.