I have been getting into metal fabrication recently. The professional tools are expensive, but after you learn to measure, cut and weld, you can just make them.
I just discovered GordsGarage “Just a guy with a garage”. One of his projects that caught my eye was a slick metal bend roller. Some C-Channel, rollers, bearings and a bottle jack — You have yourself a useful tool for you metal workshop. Check out the full project page HERE.