I just realized this discussion was starting to hijack the thread on ways to earn extra money, so I'm starting a new thread to continue it:
They're looking big-time for subjects for studies! I ran in a race last Sunday, and U-M Clinical Studies was one of the sponsors, handing out flyers and carabiners and water bottles to entice new volunteers.
Here's where you sign up, Wom: https://www.umms.med.umich.edu/regis...Volunteers.htm
There are probably colleges and other scientific research institutions in Australia looking for subjects, if you want one closer to home.