It's a great feeling to be able to make a tool and not have to go shopping. I made my own holding tool and wrench for my Superduty diesel fan clutch out of 1/8" flat steel using a torch and grinder. Last month I needed a long hole saw to drill thru a 3" plastic finnial for a floor lamp my wife was making me fix on my day off. I grabbed a piece of 3/8 rigid tubing, cut off a piece and took it over to the band saw and cut some teeth in it then chucked it into the press and drilled it thru, stopping to clear the plugs which was easy as it was open on both ends.
Made a nice ground rod pounder out of a hockey puck sized chunk of steel welded to a short piece of pipe. Place it over the rod and pound away, can't miss. A little tape to keep it from bouncing off.