Did I tell you that before arriving in #Australia, you have to make sure you don't bring any prohibited items? And lots of stuff are prohibited.
To make sure the continent is not contaminated, you get these small forms. For each item, they say "if not sure, declare it"
My tip: Just declare it. You are probably never 100% sure, and forgetting to declare an item is a criminal offence. Border control will happily help you figure things out.