Rivnut
Cruisin' on my Bluebird
There are inexpensive ways of zinc plating metal using a sacrificial zinc anode, an electrolyte solution, and low voltage. There are a couple of DIY videos on YouTube. One guy is kind of flaky but he gets results (calls blue masking tape "electrical connecting tape.") Zinc anodes are common from boat shops. Electrolyte solution is nothing more than washing soda and vinegar. Low voltage comes from a couple of AA batteries.
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