A couple extra routes/spots I forgot.

Crown St Surry Hills to Oxford St Bondi Junction (top of Centennial Park) passing through Paddington. This is a longer journey you can walk or bus. Starting near Crown and Cleveland there’s a Vinnies. From here walk up the west side of Crown towards Oxford and you’ll eventually hit a Salvos. After this cross the Road and continue towards Oxford until you come across a small Noffs. Then head up to Oxford and turn right (east) to come across a couple more (I forget which). From here you can walk up a bit further on the same side of Oxford where there is one of those swap/swop shops or catch the bus up on the other side of the road up to the Chauvel. Walk along the north side of Oxford through Paddington and you’ll come across another couple of op-shops before you get to North West corner of Centennial. Walk or bus to the North East corner of the park and then continue a little bit along Oxford and there is one more shop here on the south side not far from the bus depot.

Randwick has a few shops close together up around the corner of Belmore and Alison.