It seems that nearly everybody saw a plating demonstration years ago, and now they are firmly convinced that the instructor showed them how to electroplate bright, shiny, sparkly, copper onto old steel with copper sulphate and a battery.
Memories are faulty things.
Because both the beaker and plating solution were clear, the students could watch the piece turn into gold right before their eyes. Then the instructor took out a pocketful of such bracelets, hooked a piece of copper wire around each, did the precleaning, and handed one to each student who wanted to try it. My kids still have theirs. If you want to do a plating demo that is really impressive, that's how to do it. But be sure to remind the observers that you are demonstrating scientific principles, not necessarily a practicable process that actually has industrial utility.