Here is the one I built.
It requires 18' of PVC 3/4 or 1"
6 90* elbows
4 t connectors
4 end caps.
The main stand uses
6 2' pipe lengths
2 elbows
2 tees
The Feed uses
4 1' pipe lengths
2 T connectors
4 elbows
4 3" pipe length
4 end caps.
I glued it all together but for ease of PVC replacement you don't want to do that.
Now if you had the room you could put 4 arms our from the main frame and drill them for golf tees and then glue eggs to the tees and put them in the holes.