Grevillea, Callistemon , Dendrobium , Cymbidium, Stag horn Elk horn, Asplenium ferns, Eristomon(spelling),Sedge and reed grasses.Acacia,Banksia. Kangaroo Paws,prostanthera(native mint)
My tip is snoop around the neighbourhood into other peoples gardens to see what grows best and how it is situated. Approach the owners if you arent sure of the plants name.
Also for frogs -shallow saucer shaped ponds are best rather than deep ones. Place sedge and reeds in with rocks and logs for shelter. Depending where you are these may also attract snakes (but hey thats a good thing isn't it?) I prefer an unkempt undisturbed by man look -this is what animals prefer too rather than mowers and weedkiller.
At the nursery avoid anything labelled as "dwarf" especially trees because there's a good chance it will revert to its natural habit.
The pic is a Grevillea "firesprite" -Grevilleas are great because they are hardy ,come in every form from the mighty forest tree Silky Oak (avoid in gardens) to prostrate ground covers, an immense array of colour and bird attracting flowers,easy to prune which promotes flowering .
Hope that helps. If planting trees be aware of the size it will eventually reach and also underground pipes that it may interfere with .