Gold isn't useless. It's very easy to work, especially by beating. It doesn't tarnish or rust, and takes a great polished surface with not much effort. It is heavy, but you can beat it to a really thin surface easily (it doesn't get brittle with beating like so many other metals), so you can make it thinner to offset the weight.

If you were going to make a hat-calendar, for whatever reason, then thinly-beaten gold is not the worst material to choose (evidence: it survived!).

Of course, we have plastic or aluminium as alternatives, and gold has a high value as currency for us, so it would be a terrible choice of material now.