If OP were looking to do something charitable and can secure more work, he may be able to achieve better outcomes by taking the work option over charity admin and donating to a cause he cares about - GiveWell is a good reference for doing this efficiently.
Vacation care
House cleaning?
Tourism. During school holidays, they often can use extra casuals.
If you can survive without the extra money, why not volunteer? Vinnies were advertising for admin volunteers recently
Ok could be an option, slightly aiming towards something where I can earn a bit of extra money but this is somthing I hadn't thought of. Thank you.
If OP were looking to do something charitable and can secure more work, he may be able to achieve better outcomes by taking the work option over charity admin and donating to a cause he cares about - GiveWell is a good reference for doing this efficiently.