Australian here! Any fellow Australians have any tips on decorating with our nations limited options for Halloween?

Great imagination and good DIY skills.
both of which I'm lacking 😆

A few of the online stores are getting some reasonable props this year, though nothing like those lucky Americans and their Home Depot.
Here's a great big list
Jokers do a pre-buy on a lot of their stock, eg: pay now and get it in September