There’s an easy 50 SCs available with QF Green Tier if you’re prepared to forgo about 3300 pts and ~$17. See my post #657:
So as an update, I just got my green leaf for carbon offset and can confirm it landed at the exact time the points earned for the carbon offset spend were added to my account. So that leans more evidence towards an offset requiring to be at least $1 and paid with cash to actually land the leaf...
www.australianfrequentflyer.com.au
Whilst you can knock all these over in ~48 hrs, the trick is to hold off on one (eg the “Give Back“ donation) until a month or so from the end of you’re status year. You can then either take the 50 SCs in your current year (to get you over line) or take it at the start of the new status year for a 50 SC head start.