You could almost complete a medical degree (4 year grad degree) if you wanted to
Studying full time and paying full fee tuition? Then becoming an overworked and underpaid intern (possibly in a regional location) and then a registrar and then (at least) another couple of years for specialty training?
Not having a go at the industry but unless you're being supported (such as a 20 year old living with mum and dad) - not a viable path for those needing to replace a salary and support a family.
you cannot be on jobseeker when on LWOP
But you will be paid jobkeeper.