Side gig jobs?

I'm looking to find a flexible side-job to help out with a hundred or so dollaryroos a week. Anyone seen something for an older person who already has a day job? I got skills in IT and pretty good at DIY stuff but willing to give most things a go. Got blue card as well but don't like children haha. Something I could do at random free times eg data capturing would be great. Thought of things like exam proctor, remote IT support/oncall or such but don't see any opportunities to apply to.

Anyone seen any opportunities about or have ideas? I'm even considering ADF reservist work but that takes a while to get into.