IVe been doing some mystery shopping lately.. did Coles/Coles Express/Harvey Norman/Lush etc. Coles and coles express you had to purchase up to $10 but are reinbursed plu get $8 on top, Lush ($15) and Harvey Norman ($20) i didnt have to buy anything. I think its a good way to make a bit of extra cash while im out at the shops anyways.

Ive called Family Assistance and they said you dont have to declare it as it is not taxable income.