Wow - great catch! (Humble as these may be, it would be criminal to dump them!)
Given that it's National Science week this week (15 - 23 August), is it worth contacting the Sydney organising committee, and see if they can put you in touch with someone deserving?
http://www.scienceweek.net.au/contacts/#3
NSW Media Contact / Inspiring Australia Officer:
Jackie Randles
Email:
jackie.randles@sydney.edu.au
Phone: 0481 006 158
Science Teachers Association of New South Wales (STANSW)
Josephine Cali
Email:
scienceweek@stansw.asn.au
Hope you can find them all a good home!