Ok, here's something we discovered years ago to solve the plant label problem. We'd tried all sorts of labels including some pretty expensive ones. Even 50 cents each adds up when you plant a couple of hundred plants.
Our favorite labels were 2X2 redwoods stakes with the name painted on the side. Unfortunately Harry the dog thought they were just the thing to rip out of the ground and carry around acting like he was literate.
Old network cable works well for the wire if you separate the smaller wires and cut them to maybe 8-10 inches.
A ball point pen with a soft book behind the aluminum makes a embossed labels.