Propane tank mount bracket?

I am using a 20 lb. propane tank, tongue mounted on my build. I have been surprised at the price of the mount brackets. Most are 60-70 dollars, and some are over a hundred. I'll pay it if I have to, but I would rather buy one (just less expensive). I can weld, and fabricate, too, so I have many options. What have you guys and gals done for your tank mounts? I am open to anything that cuts the cost a bit......