...or a TIG welder...
You end up using a $5000 piece of equipment for some pretty silly jobs. Here's a professionally built set of tomato ladders I just made for Sarah. We would have just bought some to go with the planters, but they were sold out (and they cost $25 each). I built enough for all 3 of 'em for $25 worth of steel and 15 minutes of time. Winner, chicken dinner.
Darn, they'll be ugly once they get rained on a few times. Hopefully the 'maters will actually get tall enough to need them!
The washers are tacked on as tie-on points - most of the actual plant-holding will be done with twine strung between the poles. Mmmm. Black Krim!