Electroplating copper onto steel
You can attempt to use a copper item as the anode in a vinegar solution; the $\ce{Cu}$ is oxidised to $\ce{Cu^2+}$ and the acidity of the vinegar prevents the precipitation of $\ce{Cu(OH)2}$. The copper acetate formed in solution will migrate to the cathode, where you can place your item to be plated.

However, as my own experiment has shown, too high a current will result in a black deposit, not pink as the copper crystals are plated to quickly to form large crystals and thus scatter light. So use a low current!