On Eucalyptus of some description. Only a small plant so ID not possible. Perhaps Eucalyptus leucoxylon as they are in the area.
On Indigofera australis stem in garden
Found on Lucerne plants
This is a different shape and colour to the previous idea of a possible Mantid. It is also much smaller.
Size - 10 L x 5 W x 8 H mm
These are very very tiny (1mm) white dots on Acacia pycnantha leaves.