I guess that's the cheapest way to make a tent, just need some chains and steel pegs.
Luckily I found some chains and steel pegs...
https://www.bunnings.com.au/taskmaster-25-x-0-8cm-steel-peg_p4310970
https://www.bunnings.com.au/zenith-8mm-x-1m-zinc-plated-machine-chain_p0046226
In AUD again