Australia dropped the copper 'penny' (one cent) along with its two-cent coin ages ago and nobody complained except for a few electronics people like me who used them as heat sinks for diodes and other electronic components. (Yuh simply drill a hole and solder them onto the wire leads of hot components.)

At exactly one cent each, they were much cheaper than their proper catalogue equivalents, we were left all adrift when our cheap source of coppers ran out.

So guys begin stocking up now while you've still the chance.